General Description
Data Sheet
MC68HC08AS32A — Rev. 1
26
General Description
MOTOROLA
(SPI), and two of its pins with the serial communication interface module (SCI).
(See
Section 13. Serial Communications Interface (SCI)
,
Section 15. Serial
Peripheral Interface (SPI)
,
Section 16. Timer Interface (TIM)
, and
Section 12.
Input/Output (I/O) Ports
.)
1.4.14 Port F I/O Pins (PTF3/TCH5–PTF0/TCH2)
Port F is a 4-bit special function port that shares all of its pins with the timer
interface module (TIM). (See
Section 16. Timer Interface (TIM)
and
Section 12.
Input/Output (I/O) Ports
.)
1.4.15 J1850 Transmit Pin Digital (BDTxD)
BDTxD is a serial digital output data physical interface to the J1850. (See
Section 4. Byte Data Link Controller-Digital (BDLC-D)
.)
1.4.16 J1850 Receive Pin Digital (BDRxD)
BDRxD is a serial digital input data physical interface from the J1850. (See
Section 4. Byte Data Link Controller-Digital (BDLC-D)
.)
Table 1-1. External Pins Summary
Pin Name
Function
Driver Type
Hysteresis
Reset State
PTA7–PTA0
General-purpose I/O
Dual state
No
Input, Hi-Z
PTB7/ATD7–
PTB0/ATD0
General-purpose I/O
ADC channel
Dual state
No
Input, Hi-Z
PTC4–PTC3
General-purpose I/O
Dual state
No
Input, Hi-Z
PTC2/MCLK
General-purpose I/O,
bus clock output
Dual state
No
Input, Hi-Z
PTC1–PTC0
General-purpose I/O
Dual state
No
Input, Hi-Z
PTD6/ATD14/TCLK
General-purpose I/O
ADC channel/timer external
input clock
Dual state
No
Input, Hi-Z
PTD5/ATD13–
PTD0/ATD8
General-purpose/O
ADC channel
Dual state
No
Input, Hi-Z
PTE7/SPSCK
General-purpose I/O
SPI clock
Dual state
Open drain
Yes
Input, Hi-Z
PTE6/MOSI
General-purpose I/O
SPI data path
Dual state
Open drain
Yes
Input, Hi-Z
PTE5/MISO
General-purpose I/O
SPI data path
Dual state
Open drain
Yes
Input, Hi-Z
Continued on next page
F
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n
.