MC908GR32AVFAE Datasheet, PDF (114/314 Pages) Freescale Semiconductor, Inc – Microcontrollers

Keyboard Interrupt Module (KBI)
CPU
REGISTERS
M68HC08 CPU
ARITHMETIC/LOGIC
UNIT (ALU)
CONTROL AND STATUS REGISTERS — 64 BYTES
USER FLASH — 62,078 BYTES
USER RAM — 2048 BYTES
MONITOR ROM
USER FLASH VECTOR SPACE — 52 BYTES
OSC1
OSC2
CGMXFC
CLOCK GENERATOR MODULE
1–8 MHz OSCILLATOR
PHASE LOCKED LOOP
RST⁽¹⁾
IRQ⁽¹⁾
V_DDAD/V_REFH
V_SSAD/V_REFL
V_DD
V_SS
V_DDA
V_SSA
SYSTEM INTEGRATION
MODULE
SINGLE EXTERNAL
INTERRUPT MODULE
10-BIT ANALOG-TO-DIGITAL
CONVERTER MODULE
POWER-ON RESET
MODULE
POWER
INTERNAL BUS
PROGRAMMABLE TIMEBASE
MODULE
SINGLE BREAKPOINT BREAK
MODULE
DUAL VOLTAGE
LOW-VOLTAGE INHIBIT MODULE
8-BIT KEYBOARD
INTERRUPT MODULE
2-CHANNEL TIMER INTERFACE
MODULE
6-CHANNEL TIMER INTERFACE
MODULE
ENHANCED SERIAL
COMMUNICATIONS
INTERFACE MODULE
COMPUTER OPERATING
PROPERLY MODULE
SERIAL PERIPHERAL
INTERFACE MODULE
MONITOR MODE ENTRY
MODULE
SECURITY
MODULE
MEMORY MAP
MODULE
CONFIGURATION REGISTER 1–2
MODULE
PTA7/KBD7/AD15–
PTA0/KBD0/AD8⁽²⁾
PTB7/AD7–PTB0/AD0
PTC6⁽²⁾
PTC5⁽²⁾
PTC4^{(2, 3)}
PTC3^{(2, 3)}
PTC2^{(2, 3)}
PTC1^{(2, 3)}
PTC0^{(2, 3)}
PTD7/T2CH1⁽²⁾
PTD6/T2CH0⁽²⁾
PTD5/T1CH1⁽²⁾
PTD4/T1CH0⁽²⁾
PTD3/SPSCK⁽²⁾
PTD2/MOSI⁽²⁾
PTD1/MISO⁽²⁾
PTD0/SS/MCLK⁽²⁾
PTE5–PTE2
PTE1/RxD
PTE0/TxD
PTF7/T2CH5
PTF6/T2CH4
PTF5/T2CH3
PTF4/T2CH2
PTF3–PFT0⁽³⁾
PTG7/AD23–
PTG0/AD16
1. Pin contains integrated pullup device.
2. Ports are software configurable with pullup device if input port or pullup/pulldown device for keyboard input.
3. Higher current drive port pins
Figure 9-1. Block Diagram Highlighting KBI Block and Pins
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
114
Freescale Semiconductor