M68HC16 Z SERIES
OVERVIEW
USER’S MANUAL
3-11
3.4 Pin Descriptions
The following tables are a summary of the functional characteristics of M68HC16 Z-
series MCU pins.
shows all inputs and outputs. Digital inputs and outputs
use CMOS logic levels. An entry in the “Discrete I/O” column indicates that a pin can
also be used for general-purpose input, output, or both. The I/O port designation is giv-
en when it applies. Refer to
for port organization.
shows types
of output drivers.
shows characteristics of power pins.
Table 3-1 M68HC16 Z-Series Pin Characteristics
Pin
Mnemonic
Output
Driver
Input
Synchronized
Input
Hysteresis
Discrete
I/O
Port
Designation
ADDR23/CS10/ECLK
A
Y
N
O
—
ADDR[22:19]/CS[9:6]
A
Y
N
O
PC[6:3]
ADDR[18:0]
A
Y
N
—
—
AN[7:0]
1
—
Y
N
I
PADA[7:0]
AS
B
Y
Y
I/O
PE5
AVEC
B
Y
N
I/O
PE2
BERR
B
Y
N
—
—
BG/CS1
B
—
—
—
—
BGACK/CS2
B
Y
N
—
—
BKPT/DSCLK
—
Y
Y
—
—
BR/CS0
B
Y
N
O
—
CLKOUT
A
—
—
—
—
CSBOOT
B
—
—
—
—
DATA[15:0]
AW
Y
N
—
—
DS
B
Y
Y
I/O
PE4
DSACK[1:0]
B
Y
N
I/O
PE[1:0]
DSI/IPIPE1
A
Y
Y
—
—
DSO/IPIPE0
A
—
—
—
—
EXTAL
2
—
—
Special
—
—
FC[2:0]/CS[5:3]
A
Y
N
O
PC[2:0]
FREEZE/QUOT
A
—
—
—
—
HALT
Bo
Y
N
—
—
IC4/OC5
A
Y
Y
I/O
PGP7
IC[3:1]
A
Y
Y
I/O
PGP[2:0]
IRQ[7:1]
B
Y
Y
I/O
PF[7:1]
MISO
Bo
Y
Y
I/O
PQS0
MISO
3
Bo
Y
Y
I/O
PMC0
MODCLK
B
Y
N
I/O
PF0
MOSI
Bo
Y
Y
I/O
PQS1
MOSI
Bo
Y
Y
I/O
PMC1
OC[4:1]
A
Y
Y
I/O
PGP[6:3]
PAI
4
—
Y
Y
I
—
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
.
..