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LM8333GGR8/NOPB-LM8333GGR8AXSX/NOPB Fast Delivery,Good Price
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LM8333GGR8/NOPB |LM8333GGR8NOPBTIN/a300avaiMobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.bus Host Interface 49-csBGA -40 to 85
LM8333GGR8AXSX/NOPB |LM8333GGR8AXSXNOPBNSCN/a1069avaiMobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.bus Host Interface 49-csBGA


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LM8333GGR8/NOPB-LM8333GGR8AXSX/NOPB
Mobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.bus Host Interface
LM8333
www.ti.com
SNLS246K –SEPTEMBER 2006–REVISED MAY 2013
LM8333 Mobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM, and
ACCESS.bus Host Interface
Checkfor Samples: LM8333
1FEATURES DESCRIPTION

The LM8333 Mobile I/O Companion offloads the 8×8 Standard Keys burdenof keyboard scanning from the host, while• 8 Special Function Keys (SF Keys) Providinga providing extremely low power consumptionin bothTotalof72 Keys for the Maximum Keyboard operational and standby modes.It supports keypadMatrix matrices upto8×8in size (plus another8 special-
function keys), for portable applications such as• ACCESS.Bus(I2 C-compatible) Communication
cellphones, PDAs, games, and other handheldInterfaceto the Host applications.• Four General Purpose Host Programmable I/O
Pins with Two Optional (Slow) External
Key press and release events are encoded intoa
byte format and loaded intoa FIFO buffer for retrievalInterrupts the host processor. An interrupt output (IRQ)is• 15-byte FIFO Bufferto Store Key Pressed and usedto signal events suchas keypad activity,a stateKey Released Events change on eitherof two interrupt-capable general-• Error Control with Error Reports on (FIFO purpose I/O pins,or an error condition. Interrupt and
Overrun, Keypad Overrun, Invalid Command)
error codes are available to the host by reading
dedicated registers.• Host Programmable PWM Host Programmable Active Time and Four general-purpose I/O pins are available, twoof
which have interrupt capability. A pulse-widthDebounce Time
modulated output based ona host-programmable
internal timeris also available, which can be usedasAPPLICATIONS a general-purpose outputif the PWM functionis not• Mobile Phones required. Personal Digital Assistants (PDAs) To minimize power, the LM8333 automatically enters• Smart Handheld Devices a low-power standby mode when thereis no keypad,
I/O,or host activity.• Personal Media Players
The deviceis packagedina 32–pin WQFN anda
49-pin csBGA. Both are chip-scale packages.
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