MC68HC908LB8_05 Datasheet, PDF (21/234 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

V_DD 1
V_SS 2
PTC0/OSC1 ³
PTC1/OSC2 ⁴
PTC2/SHTDWN/IRQ ⁵
PTB0/TOP ⁶
PTB1/BOT ⁷
PTB2/FAULT ⁸
PTB3/PWM0 9
PTB4/PWM1 10
20 PTA6/ADC5/TCH0/KBI6
19 PTA5/RST/KBI5
18 PTA4/ADC4/KBI4
17 PTA3/ADC3/KBI3
16 PTA2/ADC2/KBI2
15 PTA1/ADC1/KBI1
14 PTA0/ADC0/KBI0
13 PTB7/V_OUT/ADC6/FAULT
12 PTB6/V–
11 PTB5/V+
Figure 1-2. 20-Pin SOIC and PDIP Pin Assignments
1.5 Pin Functions
Table 1-1 provides a description of the pin functions.
Table 1-1. Pin Functions
Pin
Name
V_DD
V_SS
PTA0
PTA1
PTA2
PTA3
PTA4
PTA5
Description
Power supply
Power supply ground
PTA0 — General purpose I/O port
KBI0 — Keyboard interrupt input 0
ADC0 — A/D channel 0 input
PTA1 — General purpose I/O port
KBI1 — Keyboard interrupt input 1
ADC1 — A/D channel 1 input
PTA2 — General purpose I/O port
KBI2 — Keyboard interrupt input 2
ADC2 — A/D channel 2 input
PTA3 — General purpose I/O port
KBI3 — Keyboard interrupt input 3
ADC3 — A/D channel 3 input
PTA4 — General purpose I/O port
KBI4 — Keyboard interrupt input 4
ADC4 — A/D channel 4 input
PTA5 — General purpose I/O port
RST — Reset input, active low with internal pullup and Schmitt trigger
KBI5 — Keyboard interrupt input 5
Pin Functions
Input/Output
Power
Power
Input/Output
Input
Input
Input/Output
Input
Input
Input/Output
Input
Input
Input/Output
Input
Input
Input/Output
Input
Input
Input/Output
Input
Input
MC68HC908LB8 Data Sheet, Rev. 1
Freescale Semiconductor
21