M68HC16 Z SERIES
OVERVIEW
USER’S MANUAL
3-13
3.5 Signal Descriptions
The following tables define the M68HC16 Z-series MCU signals.
shows sig-
nal origin, type, and active state.
describes signal functions. Both tables are
sorted alphabetically by mnemonic. MCU pins often have multiple functions. More
than one description can apply to a pin.
Table 3-3 M68HC16 Z-Series Power Connections
Pin Mnemonic
Description
V
STBY
Standby RAM power
V
DDSYN
Clock synthesizer power
V
DDA
/V
SSA
A/D converter power
V
RH
/V
RL
A/D reference voltage
V
SS
/V
DD
Microcontroller power
Table 3-4 M68HC16 Z-Series Signal Characteristics
Signal
Name
MCU
Module
Signal
Type
Active
State
ADDR[23:0]
SIM
Bus
—
AN[7:0]
ADC
Input
—
AS
SIM
Output
0
AVEC
SIM
Input
0
BERR
SIM
Input
0
BG
SIM
Output
0
BGACK
SIM
Input
0
BKPT
CPU16
Input
0
BR
SIM
Input
0
CLKOUT
SIM
Output
—
CS[10:0]
SIM
Output
0
CSBOOT
SIM
Output
0
DATA[15:0]
SIM
Bus
—
DS
SIM
Output
0
DSACK[1:0]
SIM
Input
0
DSCLK
CPU16
Input
Serial Clock
DSI
CPU16
Input
Serial Data
DSO
CPU16
Output
Serial Data
EXTAL
SIM
Input
—
FC[2:0]
SIM
Output
—
FREEZE
SIM
Output
1
HALT
SIM
Input/Output
0
IC[4:1]
GPT
Input
—
IPIPE0
CPU16
Output
—
IPIPE1
CPU16
Output
—
IRQ[7:1]
SIM
Input
0
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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