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MC68HC908QY4_10 Datasheet, PDF (22/168 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers | |||
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General Description
1.5 Pin Functions
Table 1-2 provides a description of the pin functions.
Table 1-2. Pin Functions
Pin
Name
Description
VDD
Power supply
VSS
Power supply ground
PTA0 â General purpose I/O port
PTA0
AD0 â A/D channel 0 input
TCH0 â Timer Channel 0 I/O
KBI0 â Keyboard interrupt input 0
PTA1 â General purpose I/O port
PTA1
AD1 â A/D channel 1 input
TCH1 â Timer Channel 1 I/O
KBI1 â Keyboard interrupt input 1
PTA2 â General purpose input-only port
PTA2
IRQ â External interrupt with programmable pullup and Schmitt trigger input
KBI2 â Keyboard interrupt input 2
TCLK â Timer clock input
PTA3 â General purpose I/O port
PTA3
RST â Reset input, active low with internal pullup and Schmitt trigger
KBI3 â Keyboard interrupt input 3
PTA4 â General purpose I/O port
PTA4
OSC2 âXTAL oscillator output (XTAL option only)
RC or internal oscillator output (OSC2EN = 1 in PTAPUE register)
AD2 â A/D channel 2 input
KBI4 â Keyboard interrupt input 4
PTA5 â General purpose I/O port
PTA5
OSC1 â XTAL, RC, or external oscillator input
AD3 â A/D channel 3 input
KBI5 â Keyboard interrupt input 5
PTB[0:7](1) 8 general-purpose I/O ports
1. The PTB pins are not available on the 8-pin packages (see note in 12.1 Introduction).
Input/Output
Power
Power
Input/Output
Input
Input/Output
Input
Input/Output
Input
Input/Output
Input
Input
Input
Input
Input
Input/Output
Input
Input
Input/Output
Output
Output
Input
Input
Input/Output
Input
Input
Input
Input/Output
MC68HC908QY/QT Family Data Sheet, Rev. 6
22
Freescale Semiconductor
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