参数资料
型号: MC68331CFC25B1
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 25 MHz, MICROCONTROLLER, PQFP132
封装: 0.950 X 0.950 INCH, 0.025 INCH PITCH, PLASTIC, QFP-132
文件页数: 2/90页
文件大小: 481K
代理商: MC68331CFC25B1
MOTOROLA
MC68331
10
MC68331TS/D
NOTES:
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.
2.2 MCU Power Connections
2.3 MCU Driver Types
2.4 Signal Characteristics
RXD
N
SCK
Bo
Y
I/O
PQS2
SIZ[1:0]
B
Y
N
I/O
PE[7:6]
TSC
Y
TXD
Bo
Y
I/O
PQS7
XFC2
Special
XTAL2
Special
Table 3 MCU Power Connections
VDDSYN
Clock Synthesizer Power
VSSE/VDDE
External Periphery Power (Source and Drain)
VSSI/VDDI
Internal Module Power (Source and Drain)
Table 4 MCU Driver Types
Type
I/O
Description
A
O
Output-only signals that are always driven; no external pull-up required
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 es-
tablished, to ensure rapid rise time. An external holding resistor is required to
maintain logic level while the pin is in the high-impedance state.
Bo
O
Type B output that can be operated in an open-drain mode
Table 5 MCU Signal Characteristics
Signal Name
MCU Module
Signal Type
Active State
ADDR[23:0]
SIM
Bus
AS
SIM
Output
0
AVEC
SIM
Input
0
BERR
SIM
Input
0
BG
SIM
Output
0
BGACK
SIM
Input
0
BKPT
CPU32
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
Table 2 MCU Pin Characteristics (Continued)
Pin
Mnemonic
Output
Driver
Input
Synchronized
Input
Hysteresis
Discrete
I/O
Port
Designation
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