mc68331cpv20b1 Freescale Semiconductor, Inc, mc68331cpv20b1 Datasheet - Page 31

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mc68331cpv20b1

Manufacturer Part Number
mc68331cpv20b1
Description
Mc68331 32 Bit Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1. DATA[15:0] are synchronized during reset only. MODCLK is synchronized only when used as an input port pin.
2. EXTAL, XFC, and XTAL are clock reference connections.
3. PAI and PCLK can be used for discrete input, but are not part of an I/O port.
3.4 Signal Descriptions
MC68331
USER’S MANUAL
The following tables define MCU signals. Table 3-4 shows signal origin, type, and ac-
tive state. Table 3-5 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.
Mnemonic
SIZ[1:0]
XTAL
XFC
RXD
SCK
TSC
TXD
Pin
3
3
ADDR[23:0]
DATA[15:0]
DSACK[1:0]
Pin Mnemonic
CSBOOT
CLKOUT
CS[10:0]
V
BGACK
DSCLK
EXTAL
Signal
V
Name
BERR
AVEC
BKPT
DSO
SSE
Table 3-2 MCU Pin Characteristics (Continued)
V
DSI
SS
AS
BG
BR
DS
DDSYN
I/V
/V
Freescale Semiconductor, Inc.
DDE
DDI
For More Information On This Product,
Table 3-3 MCU Power Connections
Table 3-4 Signal Characteristics
Output
Driver
Bo
Bo
B
Go to: www.freescale.com
Synchronized
OVERVIEW
Module
CPU32
CPU32
CPU32
CPU32
MCU
SIM
SIM
SIM
SIM
SIM
SIM
SIM
SIM
SIM
SIM
SIM
SIM
SIM
SIM
Input
N
Y
Y
Y
Y
External Periphery Power (Source and Drain)
Internal Module Power (Source and Drain)
Hysteresis
Signal
Output
Output
Output
Output
Output
Output
Output
Input
Type
Input
Input
Input
Input
Input
Input
Input
Input
Input
Clock Synthesizer Power
Bus
Bus
N
N
Y
Y
Y
Description
Discrete
Special
Special
I/O
I/O
I/O
I/O
(Serial Data)
(Serial Data)
Serial Clock
Active
State
0
0
0
0
0
0
0
0
0
0
0
Designation
PE[7:6]
PQS2
PQS7
Port
3-7
3

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