MC908QT1 FREESCALE [Freescale Semiconductor, Inc], MC908QT1 Datasheet - Page 22

• Manufacturer Part Number: MC908QT1
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

General Description
1.5 Pin Functions
Table 1-2
22
1. The PTB pins are not available on the 8-pin packages (see note in
PTB[0:7]
Name
PTA0
PTA1
PTA2
PTA3
PTA4
PTA5
V
V
Pin
DD
SS
(1)
provides a description of the pin functions.
Power supply
Power supply ground
PTA0 — General purpose I/O port
AD0 — A/D channel 0 input
TCH0 — Timer Channel 0 I/O
KBI0 — Keyboard interrupt input 0
PTA1 — General purpose I/O port
AD1 — A/D channel 1 input
TCH1 — Timer Channel 1 I/O
KBI1 — Keyboard interrupt input 1
PTA2 — General purpose input-only port
IRQ — External interrupt with programmable pullup and Schmitt trigger input
KBI2 — Keyboard interrupt input 2
TCLK — Timer clock input
PTA3 — General purpose I/O port
RST — Reset input, active low with internal pullup and Schmitt trigger
KBI3 — Keyboard interrupt input 3
PTA4 — General purpose I/O port
OSC2 —XTAL oscillator output (XTAL option only)
AD2 — A/D channel 2 input
KBI4 — Keyboard interrupt input 4
PTA5 — General purpose I/O port
OSC1 — XTAL, RC, or external oscillator input
AD3 — A/D channel 3 input
KBI5 — Keyboard interrupt input 5
8 general-purpose I/O ports
RC or internal oscillator output (OSC2EN = 1 in PTAPUE register)
MC68HC908QY/QT Family Data Sheet, Rev. 5
Table 1-2. Pin Functions
Description
12.1
Introduction).
Freescale Semiconductor
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Output
Output
Power
Power
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input