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RST, IRQ: Pins have internal pull up device
All port pins have programmable pull up device
PTA[0:5]: Higher current sink and source capability
PTB[0:7]: Not available on 8-pin devices
PTA0/TCH0/KBI0
PTA1/TCH1/KBI1
PTA2/IRQ/KBI2/TCLK
PTA3/RST/KBI3
PTA4/OSC2/KBI4
PTA5/OSC1/KBI5
2-CHANNEL 16-BIT
TIMER MODULE
KEYBOARD INTERRUPT
MODULE
SINGLE INTERRUPT
MODULE
AUTO WAKEUP
LOW-VOLTAGE
INHIBIT
COP
MODULE
6-CHANNEL
10-BIT ADC
PTB0
PT
B
D
D
R
B
M68HC08 CPU
PT
A
D
D
R
A
PTB1
PTB2
PTB3
PTB4
PTB5
PTB6
PTB7
MC68HC908QY1A
POWER SUPPLY
V
DD
V
SS
CLOCK
GENERATOR
MODULE
1536 BYTES
USER FLASH
128 BYTES
USER RAM
MONITOR ROM
MC68HC908QY1A
BREAK MODULE
DEVELOPMENT SUPPORT
PTB2
PTB3
PTB4
PTB6
PTB7
PTA1/TCH1/KBI1
PTB5
PTA2/IRQ/KBI2/TCLK
PTA5/OSC1/KBI5
PTA4/OSC2/KBI4
PTA3/RST/KBI3
PTA0/TCH0/KBI0
PTB1
PTB0
V
SS
V
DD
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
MAIN BOARD
IC4: MAX3227ECDBT