W77E516A 查看數據表（PDF） - Winbond
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W77E516A Datasheet PDF : 90 Pages
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W77E516A
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.
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.
Port 4
Bit:
7
6
5
4
3
2
1
0
-
-
-
-
P4.3 P4.2 P4.1 P4.0
Mnemonic: P4
Address: A5h
P4.3 – 0: Port 4 is a bi-directional I/O port with internal pull-ups. Port 4 can not use bit-addressable
instruction (SETB or CLR).
Interrupt Enable
Bit:
7
6
5
4
3
2
1
0
EA
ES1 ET2
ES
ET1 EX1 ET0 EX0
Mnemonic: IE
EA: Global enable. Enable/disable all interrupts except for PFI.
ES1: Enable Serial Port 1 interrupt.
ET2: Enable Timer 2 interrupt.
ES: Enable Serial Port 0 interrupt.
ET1: Enable Timer 1 interrupt
EX1: Enable external interrupt 1
ET0: Enable Timer 0 interrupt
EX0: Enable external interrupt 0
Address: A8h
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Publication Release Date: November 19, 2007
Revision A9
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