Datasheet

Pinout and Signal Descriptions
Port Signals
MC68HC912D60A — Rev. 3.1 Technical Data
Freescale Semiconductor Pinout and Signal Descriptions 59
Setting the RDPT bit in the TMSK2 register configures all port T outputs
to have reduced drive levels. Levels are at normal drive capability after
reset. The TMSK2 register can be read or written anytime after reset
Refer to Enhanced Capture Timer.
Table 3-3. MC68HC912D60A Port Description Summary
Port Name
Pin Numbers Data Direction
Register
(Address)
Description
80-pin 112-pin
Port A
PA[7:0]
48–41 64–57
In/Out
DDRA ($0002)
Port A and port B pins are used for address and data in
expanded modes. The port data registers are not in the
address map during expanded and peripheral mode
operation. When in the map, port A and port B can be
read or written any time.
DDRA and DDRB are not in the address map in expanded
or peripheral modes.
Port B
PB[7:0]
23–16 31–24
In/Out
DDRB ($0003)
Port AD1
PAD1[7:0]
N/A
84/82/80
/78/76/7
4/72/70
In Analog-to-digital converter 1 and general-purpose I/O.
Port AD0
PAD0[7:0]
60–53
83/81/79
/77/75/7
3/71/69
In Analog-to-digital converter 0 and general-purpose I/O.
Port CAN
PCAN[7:0]
72, 73
(1)
98–105 In/Out
General purpose I/O. PCAN[1:0] are used with the
MSCAN12 module and cannot be used as I/O.
Port E
PE[7:0]
25–28,
37–40
36–39,
53–56
PE[1:0] In
PE[7:2] In/Out
DDRE ($0009)
Mode selection, bus control signals and interrupt service
request signals; or general-purpose I/O.
Port P
PP[7:0]
76–80,
1–3
108–112
,
1–3
In/Out
DDRP ($0057)
General-purpose I/O. PP[3:0] are used with the pulse-width
modulator when enabled.
Port S
PS[7:0]
70–63 96–89
In/Out
DDRS ($00D7)
Serial communications interfaces 1 and 0 and serial
peripheral interface subsystems and general-purpose I/O.
Port T
PT[7:0]
14–11,
7–4
18–15,
7–4
In/Out
DDRT ($00AF)
General-purpose I/O when not enabled for input capture
and output compare in the timer and pulse accumulator
subsystem.
1. In 80-pin QFP package only TxCAN and RxCAN are available. PortCAN[2:7] pins should either be defined as outputs or
have their pull-ups enabled.