Datasheet

MC68HC908QY4•MC68HC908QT4•MC68HC908QY2•MC68HC908QT2•MC68HC908QY1•MC68HC908QT1
MOTOROLA General Description 29
General Description
Pin Assignments
NON-DISCLOSURE AGREEMENT REQUIRED
Figure 1-1. Block Diagram
MC68HC908QY4 AND MC68HC908QT4: 4096 BYTES
MC68HC908QY2, MC68HC908QY1, MC68HC908QT2,
AND MC68HC908QT1: 1536 BYTES
USER FLASH
RST, IRQ: Pins have internal (about 30K Ohms) pull up
PTA[0:5]: High current sink and source capability
PTA[0:5]: Pins have programmable keyboard interrupt and pull up
PTB[0:7]: Not available on 8-pin devices – MC68HC908QT1, MC68HC908QT2, and MC68HC908QT4
CONDITION CODE REGISTER V 1 1 I N Z CH
INDEX REGISTER
CPU CONTROL
STACK POINTER
ALU
68HC08 CPU
ACCUMULATOR
PROGRAM COUNTER
CPU REGISTERS
128 BYTES RAM
V
DD
V
SS
16-BIT
TIMER MODULE
COP
MODULE
POWER-ON RESET
MODULE
BREAK
MODULE
SINGLE INTERRUPT
MODULE
SYSTEM INTEGRATION
MODULE
CLOCK
GENERATOR
PTB
DDRB
MONITOR ROM
8-BIT ADC
PTA
DDRA
PTB[0:7]
POWER SUPPLY
PTA0/AD0/TCH0/KBI0
PTA1/AD1/TCH1/KBI1
PTA2/IRQ
/KBI2
PTA3/RST
/KBI3
PTA4/OSC2/AD2/KBI4
PTA5/OSC1/AD3/KBI5