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參數資料
| 型號： | W78C51 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | Subminiature PCB fuse, solderable into PCBs; Tape and reel available; Voltage Rating: 125V; Current Rating: 0.315A; Characteristic: Time Lag |
| 中文描述： | 8位單片機仿真 |
| 文件頁數： | 16/28頁 |
| 文件大?。?/td> | 272K |
| 代理商： | W78C51 |
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W78958B
- 16 -
It is important that the W78958B not enter emulation mode after entering power-down mode, even if
the ICESET pin goes high. If the breakpoint address is the instruction that immediately follows
activation of the idle mode, the EMU pin will go high after the execution of the interrupt service
routine while the W78958B is being awakened from interrupt.
New Special Function Registers
NAME
ADDR
OBJECT
VALUE
AFTER
RESET
00H
TIME TO
ACCESS
NOTES
HB
A1
During the execution of "MOVX
@Ri," the content of HB is output to
AP6.
EPMA.7 determines functions of
AP7.
EPMA.3
EPMA.0 determine values
of AP7<3:0> when EPMA.7 is "0."
Accessed by ICE makers.
Both modes for
advanced type
1
EPMA
A2
70H
Both modes for
advanced type
1
PCL
A3
00H
Emu. mode for
both types
Emu. mode for
both types
Emu. mode for
Ver. type
PCH
A4
Accessed by ICE makers.
00H
MP2
A5
The bits of MP2 determine functions
of P2<7:0> during the emulation
mode for standard type.
0FFH
(for POR
only)
0FFH
2
P8
A6
The content of P8 is output to port 8.
Both modes for
advanced type
1
XICON
C0
The bits of XICON determine/show
the functions/status of
INT 2
3.
00H
Both modes for
advanced type
1
Notes:
1. The instructions used to access these nonstandard registers may cause assembling errors with respect to the 2500 A. D.
assembler, but these errors can be ignored by adding directive ".RAMCHK OFF" ahead these instructions.
2. In standard type, the contents of MP2 must be set up correctly before the external ROM/RAM is accessed.
Power Reduction Function
The W78958B supports power reduction but is not guaranteed to duplicate the current specifications
of the W78C32.
The status of the external pins during the idle and power-down modes for the W78958B is shown in
the following tables.
Advanced Type:
ALE PSEN
1 1
0 0
PT0
PT3, P8
Port Data
Port Data
DP4
Floating
Floating
AP5 AP6
Address
Address
AP7
@1
@1
Idle
Power-down
Note: Either 0 or decoded value by AP6<7:6>, depending the value of EPMA.7.
MODE
PIN
相關PDF資料 |
PDF描述 |
|---|---|
| W78C52 | 8-BIT EMULATION MICROCONTROLLER |
| W78C516 | 8-BIT MICROCONTROLLER |
| W78C516-24 | 8-BIT MICROCONTROLLER |
| W78C516P-24 | 8-BIT MICROCONTROLLER |
| W78C516P-40 | 8-BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W78C516 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78C516-24 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78C516-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78C516F-24 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78C516F-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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