Datasheet

General Description
MC68HC908JL3E Family Data Sheet, Rev. 4
20 Freescale Semiconductor
1.5 Pin Functions
Description of the pin functions are provided in Table 1-2.
NOTE
On the MC68H(R)C908JK3E/JK1E, the following pins are not available:
PTA0, PTA1, PTA2, PTA3, PTA4, PTA5, PTD0, and PTD1.
Table 1-2. Pin Functions
PIN NAME PIN DESCRIPTION IN/OUT VOLTAGE LEVEL
V
DDJL3JL3
Power supply. In 5V or 3V
V
SS
Power supply ground Out 0V
RST
RESET input, active low.
With Internal pull-up and Schmitt trigger input.
Input
V
DD
to V
TST
IRQ
External IRQ pin.
With software programmable internal pull-up and schmitt
trigger input.
This pin is also used for mode entry selection.
Input
V
DD
to V
TST
OSC1 X-tal or RC oscillator input. In Analog
OSC2
MC68HC908JL3E/JK3E/JK1E:
X-tal oscillator output, this is the inverting OSC1 signal.
Out Analog
MC68HRC908JL3E/JK3E/JK1E:
Default is RC oscillator clock output, RCCLK.
Shared with PTA6/KBI6, with programmable pull-up.
In/Out
V
DD
PTA[0:6]
7-bit general purpose I/O port. In/Out
V
DD
Shared with 7 keyboard interrupts KBI[0:6]. In
V
DD
Each pin has programmable internal pull-up device. In
V
DD
PTA[0:5] have LED direct sink capability In
V
SS
PTB[0:7]
8-bit general purpose I/O port. In/Out
V
DD
Shared with 8 ADC inputs, ADC[0:7]. In Analog
PTD[0:7]
8-bit general purpose I/O port. In/Out
V
DD
PTD[3:0] shared with 4 ADC inputs, ADC[8:11]. Input Analog
PTD[4:5] shared with TIM channels, TCH0 and TCH1. In/Out
V
DD
PTD[2:3], PTD[6:7] have LED direct sink capability In
V
SS
PTD[6:7] can be configured as 25mA open-drain output with
pull-up.
In/Out
V
DD