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參數資料
型號: W79E532A40DN
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁數: 17/77頁
文件大小: 523K
代理商: W79E532A40DN
W79E532/W79L532
Publication Release Date: November 21, 2005
- 17 -
Revision A5
ISP Control Register
Bit:
7
6
-
5
4
-
3
-
2
-
1
0
SWRST/HWB
LDAP
LDSEL
ENP
Mnemonic: CHPCON
Address: 9Fh
SWRST/HWB: Set this bit to launch a whole device reset that is same as asserting high to RST pin,
micro controller will be back to initial state and clear this bit automatically. To read this
bit, its alternate function to indicate the ISP hardware reboot mode is invoking when
read it in high.
LDAP: This bit is Read Only. High: device is executing the program in LDFlash. Low: device is
executing the program in APFlashs.
LDSEL: Loader program residence selection. Set to high to route the device fetching code from
LDFlash.
ENP: In System Programming Mode Enable. Set this be to launch the ISP mode. Device will operate
ISP procedures, such as Erase, Program and Read operations, according to correlative SFRs
settings. During ISP mode, device achieves ISP operations by the way of IDLE state. In the
other words, device is not indeed in IDLE mode is set bit PCON.1 while ISP is enabled. Clear
this bit to disable ISP mode, device get back to normal operation including IDLE state.
Software Reset
Set CHPCON = 0X83, timer and enter IDLE mode. CPU will reset and restart from APFlash after time
out.
Port 2
Bit:
7
6
5
4
3
2
1
0
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
Mnemonic: P2
Address: A0h
P2.7-0: Port 2 is a bi-directional I/O port with internal pull-ups. This port also provides the upper
address bits for accesses to external memory.
Port 4 Chip-select Polarity
Bit:
7
6
5
4
3
-
2
-
1
-
0
P43INV P42INV P42INV P40INV
P0UP
Mnemonic: P4CSIN
Address: A2h
P4xINV: The active polarity of P4.x when set it as chip-select signal. High = Active High. Low = Active
Low.
P0UP: Enable Port 0 weak pull up.
相關PDF資料
PDF描述
W79E532A40FL 8-BIT MICROCONTROLLER
W79E532A40FN 8-BIT MICROCONTROLLER
W79E532A40PL 8-BIT MICROCONTROLLER
W79E532A40PN 8-BIT MICROCONTROLLER
W79L532 8-BIT MICROCONTROLLER
相關代理商/技術參數
參數描述
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