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PDF W77E532A Data sheet ( Hoja de datos )
| Número de pieza | W77E532A | |
| Descripción | 8-BIT MICROCONTROLLER | |
| Fabricantes | Winbond | |
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W77E532/W77E532A DATA SHEET
8-BIT MICROCONTROLLER
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 2
2. FEATURES ................................................................................................................................. 2
3. PIN CONFIGURATIONS ............................................................................................................ 3
4. PIN DESCRIPTION..................................................................................................................... 4
5. FUNCTIONAL DESCRIPTION ................................................................................................... 6
6. MEMORY ORGANIZATION ....................................................................................................... 8
7. INSTRUCTION.......................................................................................................................... 32
8. INSTRUCTION TIMING ............................................................................................................ 33
9. POWER MANAGEMENT.......................................................................................................... 41
10. INTERRUPTS ........................................................................................................................... 46
11. PROGRAMMABLE TIMERS/COUNTERS ............................................................................... 49
12. SERIAL PORT .......................................................................................................................... 58
13. TIMED ACCESS PROTECTION .............................................................................................. 65
14. H/W REBOOT MODE (BOOT FROM 4K BYTES OF LDFLASH ) ........................................... 67
15. IN-SYSTEM PROGRAMMING ................................................................................................. 68
15.1 The Loader Program Locates at LDFLASH Memory ................................................... 68
15.2 The Loader Program Locates at APFLASH Memory ................................................... 68
16. H/W WRITER MODE ................................................................................................................ 68
17. SECURITY BITS ....................................................................................................................... 69
18. ELECTRICAL CHARACTERISTICS......................................................................................... 70
18.1 Absolute Maximum Ratings .......................................................................................... 70
18.2 DC Characteristics........................................................................................................ 70
18.3 AC Characteristics ........................................................................................................ 71
18.3.1 AC Specification .......................................................................................................... 72
18.3.2 MOVX Characteristics Using Strech Memory Cycle .................................................... 73
18.3.3 Program Memory Read Cycle ..................................................................................... 74
18.3.4 Data Memory Read Cycle............................................................................................ 75
18.3.5 Data Memory Write Cycle............................................................................................ 75
19. TYPICAL APPLICATION CIRCUITS ........................................................................................ 76
19.1 Crystal connections ...................................................................................................... 76
19.2 Expanded External Data Memory and Oscillator ......................................................... 77
20. PACKAGE DIMENSIONS ......................................................................................................... 78
20.1 40-pin DIP ..................................................................................................................... 78
20.2 44-pin PLCC ................................................................................................................. 78
20.3 44-pin QFP.................................................................................................................... 79
21. APPLICATION NOTE ............................................................................................................... 80
22. REVISION HISTORY ................................................................................................................ 85
Publication Release Date: November 19, 2007
- 1 - Revision A9
1 page  
www.DataSheet4U.com
W77E532/W77E532A
Pin Description, continued
SYMBOL TYPE
DESCRIPTIONS
PORT 3: Port 3 is a bi-directional I/O port with internal pull-ups. All bits have
alternate functions, which are described below:
RXD(P3.0) : Serial Port 0 input
TXD(P3.1) : Serial Port 0 output
INT0 (P3.2) : External Interrupt 0
P3.0 − P3.7 I/O INT1(P3.3) : External Interrupt 1
T0(P3.4) : Timer 0 External Input
T1(P3.5) : Timer 1 External Input
WR (P3.6) : External Data Memory Write Strobe
RD (P3.7) : External Data Memory Read Strobe
PORT 4: Port 4 is a 4-bit bi-directional I/O port. The P4.0 also provides the
P4.0 − P4.3 I/O alternate function WAIT which is the wait state control signal. The P4.3 also
provides the alternate function REBOOT which is H/W reboot from LD flash.
* Note: TYPE I : input, O: output, I/O: bi-directional.
Publication Release Date: November 19, 2007
- 5 - Revision A9
5 Page 
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W77E532/W77E532A
A brief description of the SFRs now follows.
Port 0
Bit: 7 6 5 4 3 2 1 0
P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0
Mnemonic: P0
Address: 80h
Port 0 is an open-drain bi-directional I/O port. This port also provides a multiplexed low order
address/data bus during accesses to external memory. Besides, it has internal pull-up resisters
enabled by setting P0UP of P4CSIN (A2H) to high.
Stack Pointer
Bit:
7
SP.7
6
SP.6
5
SP.5
4
SP.4
3
SP.3
2
SP.2
1
SP.1
0
SP.0
Mnemonic: SP
Address: 81h
The Stack Pointer stores the Scratchpad RAM address where the stack begins. In other words, it
always points to the top of the stack.
Data Pointer Low
Bit:
76543210
DPL.7 DPL.6 DPL.5 DPL.4 DPL.3 DPL.2 DPL.1 DPL.0
Mnemonic: DPL
Address: 82h
This is the low byte of the standard 8052 16-bit data pointer.
Data Pointer High
Bit: 7
6
DPH.7 DPH.6
Mnemonic: DPH
5
DPH.5
4
DPH.4
32
DPH.3 DPH.2
Address: 83h
1
DPH.1
0
DPH.0
This is the high byte of the standard 8052 16-bit data pointer.
Data Pointer Low1
Bit:
76543210
DPL1.7 DPL1.6 DPL1.5 DPL1.4 DPL1.3 DPL1.2 DPL1.1 DPL1.0
Mnemonic: DPL1
Address: 84h
This is the low byte of the new additional 16-bit data pointer that has been added to the W77E532A.
The user can switch between DPL, DPH and DPL1, DPH1 simply by setting register DPS = 1. The
instructions that use DPTR will now access DPL1 and DPH1 in place of DPL and DPH. If they are not
required they can be used as conventional register locations by the user.
- 11 -
Publication Release Date: November 19, 2007
Revision A9
11 Page | ||
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