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| 型號(hào)： | MC68307VFG |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, MICROCONTROLLER, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁(yè)數(shù)： | 10/34頁(yè) |
| 文件大?。?/td> | 354K |
| 代理商： | MC68307VFG |
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18
MC68307 TECHNICAL INFORMATION
MOTOROLA
Table 11. Signal index
Mnemonic
Description
Configuration
D15-D0
Data bus
Bidirectional
A23-A8
Address bus out
Output
AD7-AD0/A7-A0 Multiplexed 8051 address/data/Address bus out
Bidirectional
AS
Address strobe
Output
UDS
Upper data strobe
Output
LDS
Lower data strobe
Output
R/W
Read/write
Output
DTACK
Data acknowledge
Bidirectional
HALT
System halt
Bidirectional
RESET
System reset
Bidirectional
TRST/RSTIN
Power-on reset
Input
CS0
Chip select 0 (ROM)
Output
CS1
Chip select 1 (RAM)
Output
CS2/CS2A
Chip select 2 (peripherals)
Output
CS3
Chip select 3 (8051)
Output
ALE
Address latch enable (8051)
Output
RD
8051-bus read
Output
WR
8051-bus write
Output
EXTAL
External clock/crystal in
Input
XTAL
External crystal
Output
CLKOUT
Clock to system
Output
BUSW
Initial data bus width for CS0
Input
CS2B/PA0
Chip select 2B / I/O port A bit 0
Bidirectional
CS2C/PA1
Chip select 2C / I/O port A bit 1
Bidirectional
CS2D/PA2
Chip select 2D / I/O port A bit 2
Bidirectional
TOUT1/PA3
Timer 1 output / I/O port A bit 3
Bidirectional
TOUT2/PA4
Timer 2 output / I/O port A bit 4
Bidirectional
BR/PA5
Bus request input / I/O port A bit 5
Bidirectional
BG/PA6
Bus grant output / I/O port A bit 6
Bidirectional
BGACK/PA7
Bus grant acknowledge output / I/O port A bit 7
Bidirectional
IRQ7
Interrupt level 7
Input
SCL/PB0
Serial M-bus clock / port B bit 0
Bidirectional
SDA/PB1
Serial M-bus data / port B bit 1
Bidirectional
TxD/PB2
UART transmit data / port B bit 2
Bidirectional
RxD/PB3
UART receive data / port B bit 3
Bidirectional
RTS/PB4
Request-to-send / port B bit 4
Bidirectional
CTS/PB5
Clear-to-send / port B bit 5
Bidirectional
TIN1/PB6
Timer 1 input / port B bit 6
Bidirectional
TIN2/PB7
Timer 2 input / port B bit 7
Bidirectional
INT1/PB8
Interrupt in 1 / port B bit 8
Bidirectional
INT2/PB9
Interrupt in 2 / port B bit 9
Bidirectional
INT3/PB10
Interrupt in 3 / port B bit 10
Bidirectional
INT4/PB11
Interrupt in 4 / port B bit 11
Bidirectional
INT5/PB12
Interrupt in 5 / port B bit 12
Bidirectional
INT6/PB13
Interrupt in 6 / port B bit 13
Bidirectional
INT7/PB14
Interrupt In 7 / port B bit 14
Bidirectional
INT8/PB15
Interrupt in 8 / port B bit 15
Bidirectional
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