mc68hc908ap8cfa Freescale Semiconductor, Inc, mc68hc908ap8cfa Datasheet - Page 25

• Manufacturer Part Number: mc68hc908ap8cfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

1.5 Pin Functions
Description of the pin functions are provided in
Freescale Semiconductor
PTA0/ADC0
PTA7/ADC7
PIN NAME
CGMXFC
V
V
OSC1
OSC2
V
V
V
IRQ1
RST
V
V
REFH
REFL
REG
DDA
SSA
DD
SS
:
Power supply.
Power supply ground.
Power supply for analog circuits.
Power supply ground for analog circuits.
ADC input reference high.
ADC input reference low.
Internal (2.5V) regulator output.
Require external capacitors for decoupling.
Reset input, active low; with internal pullup and schmitt
trigger input.
External IRQ1 pin; with internal pullup and schmitt trigger
input.
Used for mode entry selection.
Crystal or RC oscillator input.
Crystal OSC option: crystal oscillator output; inverted
OSC1.
RC OSC option: bus clock output.
Internal OSC option: bus clock output.
CGM external filter capacitor connection.
8-bit general purpose I/O port.
Pins as ADC inputs, ADC0–ADC7.
Each pin has high current sink for LED.
MC68HC908AP Family Data Sheet, Rev. 4
PIN DESCRIPTION
Table 1-2. Pin Functions
Table
1-2.
IN/OUT
In/Out
In/Out
Out
Out
Out
Out
Out
Out
Out
Out
In
In
In
In
In
In
In
In
Pin Functions
V
VOLTAGE
4.5 to 5.5
2.7 to 3.3
DD
LEVEL
2.5V
Analog
V
V
V
V
V
V
V
V
V
V
V
V
V
REFH
0 V
to V
REG
REG
REG
REG
DDA
SSA
or
DD
SS
DD
DD
DD
DD
(1)
TST
25