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參數(shù)資料
| 型號(hào)： | W77C32 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8 BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 13/71頁 |
| 文件大小： | 860K |
| 代理商： | W77C32 |
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Preliminary W77C32
Publication Release Date: March 1999
- 13 - Revision A1
MD2-0: Stretch MOVX select bits: These three bits are used to select the stretch value for the MOVX
instruction. Using a variable MOVX length enables the user to access slower external memory
devices or peripherals without the need for external circuits. The
RD
or
WR
strobe will be
stretched by the selected interval. When accessing the on-chip SRAM, the MOVX instruction
is always in 2 machine cycles regardless of the stretch setting. By default, the stretch has
value of 1. If the user needs faster accessing, then a stretch value of 0 should be selected.
MD2
MD1
MD0
Stretch value
0
0
0
0
0
0
1
1
0
1
0
2
0
1
1
3
1
0
0
4
1
0
1
5
1
1
0
6
1
1
1
7
MOVX duration
2 machine cycles
3 machine cycles
(Default)
4 machine cycles
5 machine cycles
6 machine cycles
7 machine cycles
8 machine cycles
9 machine cycles
Port 1
Bit:
7
6
5
4
3
2
1
0
P1.7
P1.6
P1.5
P1.4
P1.3
P1.2
P1.1
P1.0
Mnemonic: P1
Address: 90h
P1.7-0: General purpose I/O port. Most instructions will read the port pins in case of a port read
access, however in case of read-modify-write instructions, the port latch is read. Some pins
also have alternate input or output functions. This alternate functions are described below:
P1.0 : T2
External I/O for Timer/Counter 2
P1.1 : T2EX
Timer/Counter 2 Capture/Reload Trigger
P1.2 : RXD1
Serial Port 1 Receive
P1.3 : TXD1
Serial Port 1 Transmit
P1.4 : INT2
External Interrupt 2
P1.5 : INT3
External Interrupt 3
P1.6 : INT4
External Interrupt 4
P1.7 : INT5
External Interrupt 5
External Interrupt Flag
Bit:
7
6
5
4
3
2
1
0
IE5
IE4
IE3
IE2
XT/RG
RGMD
RGSL
BGS
Mnemonic: EXIF
Address: 91h
IE5: External Interrupt 5 flag. Set by hardware when a falling edge is detected on INT5 .
IE4: External Interrupt 4 flag. Set by hardware when a rising edge is detected on INT4.
IE3: External Interrupt 3 flag. Set by hardware when a falling edge is detected on INT5 .
IE2: External Interrupt 2 flag. Set by hardware when a rising edge is detected on INT2.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| W77C32_07 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77C32-25 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77C32-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77C32F-25 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77C32F-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
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