參數(shù)資料
型號(hào)： W78C52
廠商： WINBOND ELECTRONICS CORP
英文描述： 8-BIT EMULATION MICROCONTROLLER
中文描述： 8位單片機(jī)仿真
文件頁(yè)數(shù)： 5/28頁(yè)
文件大?。?/td> 272K
代理商： W78C52
W78958B
Publication Release Date: September 1997
- 5 -
Revision A3
RST, XTAL1, XTAL2
TYPE
MODE
DESCRIPTION
Advanced
-
Functions same as in W78C32.
Standard
-
Functions same as in W78C52.
P0.7
P0.0 Port 0, Bits 7
0
TYPE
MODE
DESCRIPTION
Advanced
Normal
Functions are the same as those in the W78C32, except that a
multiplexed address/data bus is not provided during accesses to
external memory.
Emulation
Frozen in the original state.
Standard
Normal
Pins ROMS1 (P8.1) and ROMS0 (P8.0) determine functions of P0.7
P0.0. For details, see Table D1.
Emulation
When
ESEL
is held at "H" level, P0.7
P0.0 are floating.
P1.7
P1.0 Port 1, Bits 7
0
TYPE
MODE
DESCRIPTION
Advanced
Normal
Functions are the same as those in the W78C32.
Emulation
Frozen in the original state.
Standard
Normal
Functions are the same as those in the W78C52.
Emulation
Frozen in the original state.
P2.7
P2.0 Port 2, Bits 7
0
TYPE
MODE
DESCRIPTION
Advanced
Normal
Functions are the same as those in the W78C32, except that a high-
byte address bus is not provided during accesses to external
memory.
Emulation
Frozen in the original state.
Standard
Normal
Pins ROMS1 and ROMS0 determine functions of P2.7
P2.0. For
details, see Table D1.
Emulation
When
ESEL
is held at "H" level, the states of P2.7
P2.0 depend on
the MP2 (Mask Port 2) register. At this time, if the bit content of MP2
is 0, the corresponding pin of Port 2 maintains in the original state;
otherwise, the corresponding pin of Port 2 is in high impedance state.
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