lm8328tmx National Semiconductor Corporation, lm8328tmx Datasheet - Page 8

• Manufacturer Part Number: lm8328tmx
• Description: Mobile I/o Companion Supporting Keyscan, I/o Expansion Pwm, And Access.bus Host Interface
• Manufacturer: National Semiconductor Corporation

www.national.com
8.0 Typical Application Setup
8.1 FEATURES
The following features are supported with the application example shown in example above:
8.1.1 Hardware
Hardware
•
•
•
•
•
•
•
8.1.2 Communication Layer
•
•
•
4 x 8 keys and 8 Special Function (SF) keys for 40 keys.
ACCESS.bus interface for communication with a host device.
- communication speeds supported are: 100 kHz and 400 kHz fast mode of operation.
Interrupt signal (IRQN) to indicate any keypad or hardware interrupt events to the host.
Sophisticated PWM function block with 3 independent channels to control color LED.
External reset input for system control.
Two host programmable dedicated general-purpose output pins (GPIOs) supporting IO-expansion capabilities for host device.
Two host programmable dedicated general-purpose input pins with wake-up supporting IO-expansion capabilities for host
device.
Versatile register-based command integration supported from on-chip command interpreter.
Keypad event storage.
Individual PWM script file storage and execution control for 3 PWM channels.
FIGURE 3. LM8328 in a Typical Setup with Standard Handset Keypad
8
30124103