MC68HC912DG128 Datasheet, PDF (50/452 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Pinout and Signal Descriptions
Table 3-2. Signal Description Summary
Pin Name
XIRQ
SMODN/
BKGD/
TAGHI
IX[2:0]
ECS
PW[3:0]
SS
SCK
SDO/MOSI
SDI/MISO
TxD1
RxD1
TxD0
RxD0
IOC[7:0]
AN1[7:0]
AN0[7:0]
TxCAN1
RxCAN1
TxCAN0
RxCAN0
SCL
SDA
KWJ[7:0]
KWH[7:0]
Shared
port
Pin
Number
112-pin
Description
PE0
56
Provides a means of requesting asynchronous nonmaskable interrupt
requests after reset initialization
During reset, this pin determines special or normal operating mode. After
-
23
reset, single-wire background interface pin is dedicated to the
background debug function. Pin function TAGHI used in instruction
tagging. See Development Support.
PK[2:0] 109-111 Page Index register emulation outputs.
PK7
108 Emulation Chip select.
PP[3:0] 112, 1–3 Pulse Width Modulator channel outputs.
PS7
96
Slave select output for SPI master mode, input for slave mode or master
mode.
PS6
95 Serial clock for SPI system.
PS5
94 Master out/slave in pin for serial peripheral interface
PS4
93 Master in/slave out pin for serial peripheral interface
PS3
92 SCI1 transmit pin
PS2
91 SCI1 receive pin
PS1
90 SCI0 transmit pin
PS0
89 SCI0 receive pin
PT[7:0]
18–15, 7–4
Pins used for input capture
accumulator subsystem.
and
output compare
in
the timer
and
pulse
84/82/80/7
PAD1[7:0] 8/76/74/72/ Analog inputs for the analog-to-digital conversion module 1
70
83/81/79/7
PAD0[7:0] 7/75/73/71/ Analog inputs for the analog-to-digital conversion module 0
69
-
102 MSCAN1 transmit pin
-
103 MSCAN1 receive pin
-
104 MSCAN0 transmit pin
-
105 MSCAN0 receive pin
PIB7
98
I²C bus serial clock line pin
PIB6
99
I²C bus serial data line pin
PJ[7:0]
8–11, Key wake-up and general purpose I/O; can cause an interrupt when an
19–22 input transitions from high to low or from low to high (KWPJ).
PH[7:0]
32–35, Key wake-up and general purpose I/O; can cause an interrupt when an
49–52 input transitions from high to low or from low to high (KWPH).
Technical Data
50
MC68HC912DG128 — Rev 3.0
Pinout and Signal Descriptions
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