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TC9297F-TC9297FB
LCD DRIVER WITH ON-CHIP KEY INPUT
TOSHIBA TC9297F/FB
TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC
TC9297F, TC9297FI
LCD DRIVER WITH ON-CHIP KEY INPUT
TC9297F/FB are an LCD driver IC with on-chip key input, TC9297F
which is serial data controlled.
FEATURES
lt Supports switching between 1/2 and 1/3 duty, and
between 1/2 and 1/3 bias.
0 Displays up to 80 segments in 1/2-duty mode and up to QFP60-P-1414-th80D
117 segments in 1/3-duty mode. TC9297FB
o All display segments can be either off or on. Outputs of
pins 535-839 can be switched between segment output
and LED driver output.
0 Supports key input from up to 30 keys.
o 3-wire configuration for controller connection.
QFP64-P-1212-0.65
Weight
QFP60-P-1414-0.80D : 1.10g (Typ.)
QFP64-P-1212-0.65 : 0.45g (Typ.)
1 2001-06-19
TOSHIBA
TC9297F/FB
PIN CONNECTION
(TC9297F)
(TC9297FB)
S35/OT3 l
$37/OT2 -
LCD DRIVER OUTPUT
LED DRIVER OUTPUT I S13
TOP VIEW
QFP-60PIN
21 '" 58
20 - S7
19 _ $6
SERIAL INTERFACE 18 " ss
KEY INPUT 17 I Sp
ail o PORT KEY TIMING OUTPUT 16 I S?
123456789 12131415
(rIrIgrrr8h.h4hgBrIrIrIrr8h4h)
q-rNrnRttDe-rurnRttfte-rurnerN
'test':''-'-'-'-'-'----"'",
53 LED DRIVER OUTPUT
LCD DRIVER OUTPUT
TOP VIEW
QFP-64PIN
KEY TIMING OUTPUT
10 11 12
lrh'h'BrIrErErh4hrhrIrrrErhhh4ll
L.)s-rNt'n=tDs-rNrrb'etns-rNrns-rM
2esesese2r-r-r-r-r-r-EEE"'"'
2001 -06-1 9
TOSHIBA TC9297F/FB
BLOCK DIAGRAM
_-r,,)"',""," C?lsc?'f?lf?
''s."s. "s
LELEE mmrxoom
000 F mmmmm
UUU m mmwwm
....... w
_ . g-t
I BIAS m COMMON OUTPUT F- 40 CHANNEL SEGMENT DRIVER (xl CONTROL DATA LATCH I
119bit SEGMENT DATA LATCH
ADDRESS DETECTOR
‘\~44 'os"-]
DATA O-Hr-eo-) 64bit SERIAL DATA SHIFT 'l,Ef.1ssT,,Es" " l OSCILLATOR l-c) OSC
30bit KEY DATA LATCH _
KEY SCAN TIMING I
2001 -06-1 9
TOSHIBA TC9297F/FB
PIN FUNCTIONS (Data in parenthesizes are for TC9297FB)
PIN No. SYMBOL PIN NAME FUNCTION AND OPERATION REMARKS
55(58) VDD Pewer supply input Pewer supply input pin. Normally supplied
pin with VRST-5.5V. Power-on reset function
. resets system when powered up and -
53 (56) GND Ground pm when VDD drops below 3V (Typ.).
Key-scan input pins. Data from up to V
60 (63) K0 6x5=30 keys can be input by a key DD
1 (2) K1 . . matrix with key scan output pins To-T5.
S S Key-scan input pm When high is input to pins, key scan
4(5) K4 begins. These are I/O pins with built-in RIN
pull-down resistors.
Key scan timing output pins. Due to key VDD
matrix configured using load resistor RON
5(6) T0 . . . .
S , Key scan timing on the N-channel, no diodes are required.
10(11) T output pin Output is normally high. When high RON
5 is input to key scan input pins Ko-K4, key
scan begins.
LCD segment output/common output
11 (12) COM1 LCD common output pins. When set to 1/2-duty, can display
12 (13) COM2 pin up to 80 segments in a matrix of pins VDD
COM1, 2 and 50-539; when set to 1/3- .-
duty, up
13 (14) So/ ?ffm5;%:6::t0::put to 117 segments in a matrix of COM1-3 -
COM3 in p and 51-539. In 1/3-duty mode, pin so
p is used as COM3.
14 15--31 S LCD segment output/LED driver output .-
s S1 LCD segment output pins. When set to 1/2-duty, can display
pin up to 80 segments in a matrix of pins -
48 34~51 S
35 COM1, 2 and 50-539; when set to 1/3-
duty, up to 117 segments in a matrix of
COM1-3 and S -S .
s_3..it../, Pins 535-539 allo 3sirve as LED driver pins. VDD
49 (52) 0T3 LCD segment output . _
. The LED driver output becomes N-ch open
, , /LED driver output . .
52 (55) S 9/ pin driver output, and large-current drive I-- '--
'o3-1; allows direct LED display.
2001 -06-1 9
TOSHIBA
TC9297F/FB
PIN No.
SYMBOL
PIN NAME
FUNCTION AND OPERATION
REMARKS
54 (57)
Crystal oscillator
output pin
Oscillates when connected to an external
crystal.
The oscillation frequency is expressed by
the frequency expression :
fosc=1.5/(C.R) [Hz]
For instance, when C=0.01pF, R=30kQ :
fOSC=5kHZ
56 (59)
System reset input
System reset input pin. While RST input is
low, the oscillator stops, all internal data
are reset, and the LCD output and key
scan output pins are fixed to high.
There is a built-in power-on reset circuit,
so this pin should normally be connected
to VDD.
57 (60)
Clock input pin
58 (61)
Data I/O pin
59 (62)
Chip enable input
Serial interface pins that send to and
receive from the controller display data
and key input data, and the data to
control these.
Data send/receive is not performed while
pin CE is low, but when CE goes high,
begins at the DATA pins in sync with the
clock input of the CK input pin.
All these pins have built-in Schmitt input
circuits.
2001 -06-1 9
2001 -06-1 9
O CONTENT OF ADDRESS DATA
TOSHIBA
DUTY A3 A2 A1 A0 ADDRESS (HEX) D0 D1 D2 D3 D4 D5 D5 D7 D8~Dgz 033~Dgg D40~D59
$0~S19 Display Data
50 S1 52 S3 $4~S19
COMZ COM1 COMZ COM1 COMZ COM1 COMZ COM1 COMZ 1 S stem
System System System System System System System System ’ y
$20~539 Display Data
0 * 1 * 2 3 6 7 520 521 S22 523 524~539 _
' ’ ’ COMZ COM1 COMZ COM1 COM2 COM1 COMZ COM1 COMZ 15mm
System System System System System System System System ' y
$0~S19 Display Data
So 51 52~S19
COM3 COMZ COM1
_ System System System COM3’ 2’ 1 System
520~539 Display Data
0 * 1 * 2’ 3, 6' 7 520 $21 522~539
COM3 COMZ COM1 COM3 COMZ COM1 COM3 2 1 S stem
System System System System System System ' ' y
SET SEGMENT OUTPUT/LED DRIVER LCD CONTROL
S3g/OTOIS38/OT1|Sg7/OT2IS35/OT3 Duty | Bias
"O u u 0 n _
1 0 o 1 9 LED DRIVER CONTROL DISPLAY CONTROL ”0,,
| 0T1 I 0T2 [ 0T3 OP [ BL [ LT
1 0 1 0 A KEY DATA(OUTPUT)
KON I KWK [ K01 K02 l K03 1 K04 I K05 } K06 lKo7~K30
* : Don’t care
— : Invalid data
TC9297F/FB — 6
TC9297F/FB
TOSHIBA TC9297F/FB
OPERATING INSTRUCTIONS
1. Input format for display data and mode data
It Display data input timing is as shown below (when set to 1/3-duty):
CE L u ...l-
(1) (2) (55) (55) (57) (58) (59) (60) (61) (62) (63) (64)
MSB LSB 5
DATA (D4)(o3)(o2)(D1)(D0)(Aa)(A2)(A1)(A0l i,'
I I I i
f" Display data I Address data I i'
Display (OLD) X (NEW)
For rise and fall times, see Electrical Characteristics.
0 The last 4 bits of data are the address data.
0 For segment data and control data corresponding to the segment data output being used,
set all bits used.
0 Segment data corresponding to the unused segment outputs of the MSB may be omitted.
0 Segment data may be set to either address 1H or 2H.
0 Do not set segment data until the data at address 8H have been set.
Otherwise, it may be impossible to set segment data correctly.
0 Data input is synchronized with the clock rising edge.
(1) 1/2-duty (80-segment) data format
The format for display data in 1/2-duty mode is as shown below:
MSB LSB
Data address
Add D39 D38 D37 D36 D35 D34 ii D3 D2 D1 D0 A3 A2 A1 A0
ressI S19C1 I $19C2 I 518C1 I $18C2 I $17C1 I 517C: I I StCl I SIC2 I 50C1 I $oC2 I o I . I * I 1|
Address
I539C1 I539C2 I 538CI I538C2 I S37C1 I S37C2 I l,' I521C1 I521C2 I S20C1 I S20C2 I 0 I * I 1 I *I
* Don't Care
0 In this case, segment data controlled by COM3 are invalid, and data need not be set.
0 Pins So-Sgg can be used for segment output.
7 2001-06-19
TOSHIBA TC9297F/FB
(2) 1/3-duty (80-segment) data format
The format for display data in 1/3-duty mode is as shown below:
MSB LSB
Data address
Add D59 D58 D57 ii D5 D4 D3 D2 D1 D0 A3 A2 A1 A0
117'ls,9colso9c2iswc3l , 1s,c, I S1Cit I scl * I * I w l0lilol
AdSLeSSI 539C1 I $39C2 I S39C3 I 3 I 521C1 I 521C2 I $21C3 I $20CI I 520C2 I 520C3 I 0 I * I 1 I *I
u * Don't Care
It In this case, the pin is used as COM3, but set data as for the So pin.
(Note that the set data are non-functional.)
o Pins 51-539 can be used for segment output.
These data bits control on/off switching of the display corresponding to the common
outputs. A waveform corresponding to display on/off is output to the segment output
corresponding to common/segment data. Set "1" for display on and "o" for off.
To set data for pins 50-519 and 520-539 independently, specify the address to 1H and 2H
respectively.
When data for pins SO-SIS and 520-539 overlap, identical data can be transferred
simultaneously with a single serial data transfer by specifying 3H as the address.
When there are unused segments of the MSB, the data setting for unused segments of the
MSB omit and it can possible to set from used segment data of the MSB.
(Example) When up to 24 segments are used in 1/3-duty mode.
CE L " l-
D14 D13 D12 ii D5 D4 D3 D2 D1 D0 A0 A2 A1 A0
DATA I S24 C1 I $24 C2 I $24 C3 I ' I $21C1 I 521C2 I 521C3 I S20 C1 I Sito C2 I S20 C3 I 0 I * I 1 I 0 1(Address2H)
D59 D58 D57 ii D5 D4 D3 D2 D1 D0 A0 A2 A1 A0
DATA I S19 CI I S19 C2 I S19 c3 I I: I SIC1 I SIC2 I SIC? I * I ' I * I o I * I o I 1 I(AddressiH)
" t Don't Care
8 2001-06-19
TOSHIBA TC9297F/FB
(3) Duty and bias bits
D7 D6 D5 D4 D3 D2 D1 Do A3 A2 A1 A0
Address 8H 0 1 0 0 0
* (Note) These data are reset to "o" at reset.
(4) BL and LT bits
D7 D6 D5 D4 D3 D2 D1 D0 A3 A2 A1 A0
1 0 0 1
Address 9H
DISPLAY
Normal display
All on
All off**
Even when the display is set to all on or all off, the display data prior to setting is
retained and no resetting of display data is required.
It is also possible to set new data while all on or all off.
* (Note) These data are reset to "o" at reset.
** (Note) When both BL and LT are "I", BL takes priority.
9 2001-06-19
TOSHIBA TC9297F/FB
OP bit
D7 D6 Ds D4 D? D2 DI D0 A? A2 A1 A0
Awwl o I I ITI I I I l1l0l0lol
* 0 Functions stop
1 All functions operate
The OP bit controls the operating and stopping of the LCD driver, key scan and other
functions. When it is reset to "O", all operations stop, the LCD driver output and key scan
output pins are fixed to high, and the oscillator stops.
The data of control bits prior to setting is retained, and new data can be set.
When this pin is set to "I", the oscillator, LCD driver and key scan operate.
At reset, this bit is reset to "O". Initialize control data and display data in this state.
* (Note) These data are reset to "o" at reset.
Segment output/LED driver switching bits and LED driver control bits
D7 D6 Ds D4 D3 D2 D1 D0 A3 A2 A1 A0
AddressBHI o I o I I I S35/OT3 I $37/OT2 I S38/OT1 I S39/OTO I 1 I 0 I 0 I oI
* 0 Segment output
1 LED driver
D7 D6 D5 D4 D3 D2 D1 D0 A3 A2 A1 A0
Address9HI 0 I I I I 0T3 I 0T2 I 0T1 I 0T0 I 1 I o I o I 1 I
* 0 N-ch open drain output off
1 N-ch open drain output on
The segment output/LED driver switching bits switch between segment output and the
LED driver output. Resetting these bits to "o" selects segment output; setting to "I"
selects LED driver output. When set to segment output, display data are output and the
LCD display is turned on and off; when set to LED driver output, output is turned on and
off by the LED driver control bit.
The LED driver is of N-ch open-drain structure. Setting the LED driver control bit to "o"
turns off N-ch open output; setting to "I'' turns off N-ch open output.
When set to segment output, the corresponding LED driver control data are invalid;
conversely, when set to LED driver, the corresponding segment output display data are
invalid.
When 535-539 are used for LED driver output, data must not be set to address 9H until
the segment/LED switching bit of the corresponding address 8H has been set to "I".
* (Note) These data are reset to "0" at reset.
10 2001-06-19
TOSHIBA TC9297F/FB
2. Key data output format
(1) Key data output timing is as shown below:
CEJ L! " |_
(32) 5
i' 5 (Do) (D1) (D2) (D3) (D31) i
DATA EEEE (i.KoN)(Kvv4(K011
L Input I output _I T Input
r Address data T Key data -l
For rise and fall times, see Electrical Characteristics.
(2) Structure of key matrix
0K1 K2 K3 K4 T0 T1 T2 T3 T4 T5
(Structure of key matrix)
It At key input, KON="1"; when multiple strikes occur, KwK="1".
It After address input, the data pin is set to output at CE = " L", and key requests
(KON="1") can be accepted.
It Setting the CE pin from high to low returns the data pin to input; key data detection
can be suspended.
11 2001-06-19
TOSHIBA TC9297F/FB
Key scan timing is as shown below:
Keyinput
3 f i 5 4.8ms E :
I i4.8ms(max) P-on." : 9.6ms(max)
3 5 E 0.8ms i g
A l:- Fl tt Fl
T1 I I I n n " n
f s " ,
|— _I _| __I....
Key data / x ff x N
(Note) When fosc is 5kHZ.
When high is input to the key input pin, key scanning begins within not more than one
cycle (4.8ms when fosc is 5kHz), and the key data corresponding to the key timing is
input. After one more cycle of key scanning, KON is set to "I" and key data are entered
and upgraded every cycle. When the key is released, key scanning stops within not more
than two cycles (9.6ms when fosc is 5kHz), and all key data are reset to "O".
Thus, key data must be accessed during key scanning.
To access key data, pin CE may be held low after input of address data.
The result is standby until key input occurs. In this state, the KON bit is output to the
data pin as-is, so that it is "I" when there is key input and "0" when there is not.
If key data are continuously accessed based on the state of KON, key data can be
effectively fetched.
12 2001-06-19
TOSHIBA TC9297F/FB
3. The output waveforms of the LCD driver are as shown below.
It 1/2 duty, 1/2 bias (COM1 system off, COM2 system on)
fr--fosc/40lHzl (When fosc=5kHz, fT=125Hz)
i-T-I !
1/2 VDD ...... ..
1/2 VDD
VDD .. ........................... .... ............ -
GND ...... - ............................................
It 1/3 duty, 1/3 bias (COM1 system on, COM2 system off, COM3 system on)
fT=fosc/50 [Hz] (When fosc= 5kHz, fT=83.3Hz)
...'-.uT-) '=
2/3 VDD
1/3 VDD
2/3 VDD
1/3 VDD
2/3 VDD
1/3 VDD
13 2001-06-19
TOSHIBA
TC9297F/FB
MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VDD -0.r-7.0 V
Input Voltage VIN -0.3--VDD + 0.3 V
Power Dissipation PD 300 mW
Operating Temperature Topr -40--85 "C
Storage Temperature Tstg -65--150 "C
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, 1/DD=4.5--5.5V, Ta = -40--85oC)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Operating Supply
Voltage VDD VRST 5.0 5.5 V
Power On Reset
Voltage VRST - - 2.5 3.0 3.5 V
Operating Supply VDD = 5V, fosc = 5kHz,
Current IDD1 - No load - 0.4 1.0 mA
Stand-by Current IDDZ - OP-- "0", VDD = 5V - 120 250 pA
" " -_r....r....r.e VDD
Input H Level VIH - K0 K3, CE, DATA, CK, RST x0.8 VDD v
Voltage "L" Level " - Kir-K3, CE, DATA, CK, RiT 0 ~ 1,fy, v
SCHMITT Voltage
Width VSCH - VDD=5V, CE, DATA, CK - 1.0 - V
Input Leak "H" Level IIH - V|N=VDD, CE, DATA, CK, ITS-T - -- 11.0 PA
Current "L" Level IIL - le=ov, CE, DATA, CK, AST- - _ A1.0 pA
VDD = 5V 1/2VDD 1/2VDD
1/2 Level VI/2 COM1, COM2 -0.5 1/21/DD +0.5 V
Output VDD = 5V 1 /3VDD 1 /3VDD
Voltage 1/3 Level V1/3 COM1--COM3, Str-sag -0.5 “WDD +0.5 V
VDD = 5V 2 / 3VDD 2 / 3VDD
2 L I V - 2 V V
/3 eve 2/3 COM1--COM3, so~539 -0.5 /3 DD +0.5
" " VDD = 5V, VOH =4.5V, TO-TS - -
H Level IOH1 COM1--COM3, So~539, DATA 0.5 3.0 mA
Output " " VDD = 5V, VOL=0.5V
L L I 1 I - . . - A
Current eve OLI COMI-- COM3, str-sag, DATA 0 5 3 0 m
u n VDD = 5V, VOL =1.0V,
L Level 2 lOLit - O-ti-r-o-ta- 10 20 - mA
OFF-LEAK Current ILO - OTO--OT3 - .'_ i 1.0 pA
N-ch Output Load
. R - Ta =25°C, T --T
Resistor ON 0 5 75 150 300 k0
Pull-Down Resistor RIN - Ta=25°C, Ktr-k3
2001 -06-1 9
TOSHIBA TC9297F/FB
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Oscillation Frequency fOSC - - - 5 20 kHz
Operating Clock
Frequency Range fCK - 2.0 MHz
Clock Pulse Width tCKW . . 250 -- -
Data Set Time tset - Refer to timing chart as below 250 ~ - n
Data Hold Time tHOLD 250 ~ - s
CE Pulse Width tCEW 250 _ -
CE, CK, DATA-IN TIMING
CE -il §_7C__
DATA ok X tt h
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN TYP. MAX. UNIT
Operating Clock
Frequency Range fCK - 2.0 MHz
Clock Pulse Width tCKW 250 -- -
tpd1 - ~ 250
Data Delay Time tpd2 - Refer to timing chart as below - ' 250
tpdg - ~ 250 ns
CE Pulse Width tCEW 250 -- -
Data Set Time tset 250 -- -
Data Hold Time How 250 ' -
CE, CK, DATA-OUT TIMING
CE 'l,
DATA / D0(KON) X01 ii' D30)( D31 l
CK 7 -N-ss-; _
tpd1 tCKW tpd2 tpd3
tCEw tset 1/fck tlpdz tHOLD
15 2001-06-19
TOSHIBA TC9297F/FB
PACKAGE DIMENSIONS
QFP60-P-1414-0.80D Unit : mm
18.9Hh3
14.0i0.2
1 .4TYP
14 OiO 2
18.9i0.3
1 s----------)-
0.35Hhl
0.23i0.1 2.7i0.2
9.15:8:55
I 1 35:02
Weight : 1.10g (Typ.)
16 2001-06-19
TOSHIBA TC9297F/FB
PACKAGE DIMENSIONS
QFP64-P-1212-0.65 Unit : mm
14.thr.0.2
‘ 12.0i0.2 _
g 'lfiiilfWiRflfifififififm ' "
',?ij- 3:332 _
. CEE] I
T" 23:! E
ily, i
cu. N.
i? a R
3'33 C).,) c?
:13 N) xt
E 'r T""
j:f:lil I
1.125TYP
Weight : 0.45g (Typ.)
13.0:02 _ ,_
17 2001-06-19
TOSHIBA TC9297F/FB
RESTRICTIONS ON PRODUCT USE
000707EBA
OTOSHIBA is continually working to improve the quality and reliability of its products.
Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent
electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer,
when utilizing TOSHIBA products, to comply with the standards of safety in making a safe
design for the entire system, and to avoid situations in which a malfunction or failure of such
TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified
operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please
keep in mind the precautions and conditions set forth in the "Handling Guide for
Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc..
OThe TOSHIBA products listed in this document are intended for usage in general electronics
applications (computer, personal equipment, office equipment, measuring equipment, industrial
robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor
warranted for usage in equipment that requires extraordinarily high quality and/or reliability or
a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended
Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship
instruments, transportation instruments, traffic signal instruments, combustion control
instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA
products listed in this document shall be made at the customer's own risk.
0 The products described in this document are subject to the foreign exchange and foreign trade
OThe information contained herein is presented only as a guide for the applications of our
products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of
intellectual property or other rights of the third parties which may result from its use. No
license is granted by implication or otherwise under any intellectual property or other rights of
TOSHIBA CORPORATION or others.
0 The information contained herein is subject to change without notice.
18 2001-06-19
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