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參數(shù)資料
| 型號(hào)： | W87LE58 |
| 元件分類： | 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)： | 4/31頁(yè) |
| 文件大?。?/td> | 426K |
| 代理商： | W87LE58 |
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Preliminary W78LE58
- 4 -
BLOCK DIAGRAM
P3.0
P3.7
P1.0
P1.7
ALU
Port 0
Latch
Port 1
Latch
Timer
1
Timer
0
Timer
2
Port
1
UART
XTAL1
PSEN
ALE
Vss
VCC
RST
XTAL2
Oscillator
Interrupt
PSW
Instruction
Decoder
Sequ&
Reset Block
Bus & Clock
Controller
SFR RAM
Address
Power control
512 bytes
RAM & SFR
Stack
Pointer
B
Addr. Reg.
Incrementor
PC
DPTR
Temp Reg.
T2
T1
ACC
Port 3
Latch
Latch
Port
3
Port 2
Latch
P4.0
P4.3
Port
4
Port
0
Port
P2.0
P2.7
P0.0
P0.7
32KB
MTP-ROM
M4KB
FUNCTIONAL DESCRIPTION
The W78LE58 architecture consists of a core controller surrounded by various registers, four general
purpose I/O ports, one special purpose programmable 4-bits I/O port, 512 bytes of RAM, three
timer/counters, a serial port. The processor supports 111 different opcodes and references both a 64K
program address space and a 64K data storage space.
RAM
The internal data RAM in the W78LE58 is 512 bytes. It is divided into two banks: 256 bytes of
scratchpad RAM and 256 bytes of AUX-RAM. These RAMs are addressed by different ways.
RAM 0H
7FH can be addressed directly and indirectly as the same as in 8051. Address pointers
are R0 and R1 of the selected register bank.
RAM 80H
FFH can only be addressed indirectly as the same as in 8051. Address pointers are R0,
R1 of the selected registers bank.
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