參數(shù)資料
型號(hào): W78ERD2
廠(chǎng)商: WINBOND ELECTRONICS CORP
元件分類(lèi): 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(yè)數(shù): 11/72頁(yè)
文件大?。?/td> 606K
代理商: W78ERD2
W78ERD2
Publication Release Date: April 20, 2005
- 11 -
Revision A4
Port 4.0 High Address Comparator
Bit:
7
6
5
4
3
2
1
0
P40AH.7 P40AH.6 P40AH.5 P40AH.4 P40AH.3 P40AH.2 P40AH.1 P40AH.0
Mnemonic: P40AH Address: 85h
Port Option Register
Bit:
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
P0PH
Mnemonic: POPT Address: 86h
BIT
NAME
FUNCTION
7
-
Reserve
6
-
Reserve
5
-
Reserve
4
-
Reserve
3
-
Reserve
2
-
Reserve
1
-
Reserve
0
P0PH
0: Disable Port 0 weak up.
1: Enable Port 0 weak up. The pins of Port 0 can be configured with either the
open drain or standard port with internal pull-up. By the default, Port 0 is an
open drain bi-directional I/O port. When the P0UP bit in the POPT register is
set, the pins of port 0 will perform a bi-directional I/O port with internal pull-up
that is structurally the same Port2.
Power Control
Bit:
7
6
5
4
3
2
1
0
SMOD SMOD0
-
POR
GF1
GF0
PD
IDL
Mnemonic: PCON Address: 87h
BIT
NAME
FUNCTION
7
SMOD
1: This bit doubles the serial port baud rate in mode 1, 2, and 3.
6
SMOD0
0: Framing Error Detection Disable. SCON.7 acts as per the standard 8052
function.
1: Framing Error Detection Enable, then and SCON.7 indicates a Frame Error and
acts as the FE (FE_1) flag.
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