MC68HC912DG128 Datasheet, PDF (59/452 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Pinout and Signal Descriptions
Port Signals
Port Name
Port A
PA[7:0]
Port B
PB[7:0]
Port AD1
PAD1[7:0]
Port AD0
PAD0[7:0]
Port CAN1
PCAN1[1:0]
Port CAN0
PCAN0[1:0]
Port IB
PIB[7:4]
Port IB
PIB[3:2]
Port E
PE[7:0]
Port K
PK[7,3:0]
Port P
PP[3:0]
Port S
PS[7:0]
Port T
PT[7:0]
Table 3-3. Port Description Summary
Pin Numbers
112-pin
64-57
31–24
84/82/80/78/7
6/74/72/70
83/81/79/77/7
5/73/71/69
102–103
104–105
98–101
102–103
36–39, 53–56
13,
108-111
112,
1–3
96–89
18–15, 7–4
Data Direction
Register
(Address)
In/Out
DDRA ($0002)
In/Out
DDRB ($0003)
In
In
PCAN1[1] Out
PCAN1[0] In
PCAN0[1] Out
PCAN0[0] In
In/Out
DDRIB ($00E7)
In/Out
DDRIB ($00E7)
PE[1:0] In
PE[7:2] In/Out
DDRE ($0009)
In/Out
DDRK ($00FD)
In/Out
DDRP ($0057)
In/Out
DDRS ($00D7)
In/Out
DDRT ($00AF)
Description
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.
Analog-to-digital converter 1 and general-purpose I/O.
Analog-to-digital converter 0 and general-purpose I/O.
PCAN1[1:0] are used with the MSCAN1 module and
cannot be used as general purpose I/O.
PCAN0[1:0] are used with the MSCAN0 module and
cannot be used as general purpose I/O.
General purpose I/O. PIB[7:6] are used with the I-Bus
module when enabled.
General purpose I/O
Mode selection, bus control signals and interrupt service
request signals; or general-purpose I/O.
Page index emulation signals in expanded or peripheral
mode or general-purpose I/O.
General-purpose I/O. PP[3:0] are used with the pulse-width
modulator when enabled.
Serial communications interfaces 1 and 0 and serial
peripheral interface subsystems; or general-purpose I/O.
General-purpose I/O when not enabled for input capture
and output compare in the timer and pulse accumulator
subsystem.
MC68HC912DG128 — Rev 3.0
MOTOROLA
Pinout and Signal Descriptions
For More Information On This Product,
Go to: www.freescale.com
Technical Data
59