OVERVIEW
M68HC16 Z SERIES
3-12
USER’S MANUAL
—
Y
Y
I
—
PCS0/SS
Bo
Y
Y
I/O
PQS3
PCS[3:1]
Bo
Y
Y
I/O
PQS[6:4]
PWMA, PWMB
5
A
—
—
O
—
R/W
A
Y
N
—
—
RESET
Bo
Y
Y
—
—
RXD
—
N
N
—
—
Bo
Y
Y
—
PMC6
Bo
Y
Y
—
PMC4
SCK
Bo
Y
Y
—
PMC2
SCK
Bo
Y
Y
I/O
PQS2
SIZ[1:0]
B
Y
Y
I/O
PE[7:6]
SS
Bo
Y
Y
—
PMC3
TSC
—
Y
Y
—
—
TXD
Bo
Y
Y
I/O
PQS7
TXDA
Bo
Y
Y
—
PMC7
TXDB
Bo
Y
Y
—
PMC5
XFC
—
—
—
Special
—
XTAL
—
—
—
Special
—
NOTES:
1. DATA[15:0] are synchronized during reset only. MODCLK, QSM, MCCI and ADC pins are synchronized
only when used as input port pins.
2. EXTAL, XFC, and XTAL are clock reference connections.
3. MCCI pins used only on the MC68HC16Z4/CK16Z4.
4. PAI and PCLK can be used for discrete input, but are not part of an I/O port.
5. PWMA and PWMB can be used for discrete output, but are not part of an I/O port.
Table 3-2 M68HC16 Z-Series Driver Types
Type
I/O
Description
A
O
Three-state capable output signals
Aw
O
Type A output with weak p-channel pull-up during reset
B
O
Three-state output that includes circuitry to pull up output before high impedance is established,
to ensure rapid rise time
Bo
O
Type B output that can be operated in an open-drain mode
Table 3-1 M68HC16 Z-Series Pin Characteristics (Continued)
Pin
Mnemonic
Output
Driver
Input
Synchronized
Input
Hysteresis
Discrete
I/O
Port
Designation
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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