參數資料
型號: W78ERD2A40PL
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, PQCC44
封裝: ROHS COMPLIANT, PLASTIC, LCC-44
文件頁數: 21/76頁
文件大小: 650K
代理商: W78ERD2A40PL
W78ERD2/W78ERD2A
Publication Release Date: February 14, 2007
- 21 -
Revision A10
BIT
NAME
FUNCTION
7, 6
P43FUN1
P43FUN0
00: Mode 0. P4.3 is a general purpose I/O port, like Port 1.
01: Mode 1. P4.3 is a read-strobe signal for chip-select purposes. The
address range depends on SFR P43AH, P43AL, P43CMP1 and
P43CMP0.
10: Mode 2. P4.3 is a write-strobe signal for chip-select purposes. The
address range depends on SFR P43AH, P43AL, P43CMP1 and
P43CMP0.
11: Mode 3. P4.3 is a read/write-strobe signal for chip-select purposes. The
address range depends on SFR P43AH, P43AL, P43CMP1, and
P43CMP0.
Chip-select signal address comparison:
00: Compare the full 16-bit address with P43AH and P43AL.
01: Compare the 15 MSB of the 16-bit address with P43AH and P43AL.
10: Compare the 14 MSB of the 16-bit address with P43AH and P43AL.
11: Compare the 8 MSB of the 16-bit address with P43AH.
5, 4
P43CMP1
P43CMP0
3, 2
P42FUN1
P42FUN0
P42CMP1
P42CMP0
P4.2 function control bits, similar to P43FUN1 and P43FUN0 above.
1, 0
P4.2 address-comparator length control bits, similar to P43CMP1 and
P43CMP0 above.
F/W Flash Low Address
Bit:
7
6
5
4
3
2
1
0
Mnemonic: SFRAL Address: C4h
F/W flash low byte address
F/W Flash High Address
Bit:
7
6
5
4
3
2
1
0
Mnemonic: SFRAH Address: C5h
F/W flash high byte address
F/W Flash Data
Bit:
7
6
5
4
3
2
1
0
Mnemonic: SFRFD Address: C6h
F/W flash data
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