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PDF W77L516A Data sheet ( Hoja de datos )
| Número de pieza | W77L516A | |
| Descripción | 8-BIT MICROCONTROLLER | |
| Fabricantes | nuvoton | |
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W77L516A 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. RESET CONDITIONS ...............................................................................................................42
11. RESET STATE ..........................................................................................................................44
12. PROGRAMMABLE TIMERS/COUNTERS ................................................................................49
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. ON-CHIP FLASH EPROM CHARACTERISTICS......................................................................69
17. SECURITY BITS........................................................................................................................72
18. ELECTRICAL CHARACTERISTIC ............................................................................................73
18.1 Absolute Maximum Ratings...........................................................................................73
18.2 DC Characteristics ........................................................................................................73
18.3 AC Characteristics.........................................................................................................75
19. TYPICAL APPLICATION CIRCUITS .........................................................................................80
19.1 Crystal connections .......................................................................................................80
19.2 Expanded External Data Memory and Oscillator...........................................................81
20. PACKAGE DIMENSIONS..........................................................................................................82
20.1 40-pin DIP......................................................................................................................82
20.2 44-pin PLCC ..................................................................................................................82
20.3 44-pin QFP ....................................................................................................................83
21. APPLICATION NOTE ................................................................................................................84
21.1 In-system Programming Software Examples ................................................................84
22. REVISION HISTORY.................................................................................................................89
Publication Release Date: December 4, 2008
- 1 - Revision A9
1 page  
W77L516A
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
P3.0−P3.7
INT0 (P3.2) : External Interrupt 0
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
P4.0−P4.3
PORT 4: Port 4 is a 4-bit bi-directional I/O port. The P4.0 also provides the
I/O alternate function WAIT which is the wait state control signal. The P4.3 also
provide 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: December 4, 2008
- 5 - Revision A9
5 Page 
W77L516A
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
This is the low byte of the standard 8052 16-bit data pointer.
Address: 82h
DATA POINTER HIGH
Bit:
76543210
DPH.7 DPH.6 DPH.5 DPH.4 DPH.3 DPH.2 DPH.1 DPH.0
Mnemonic: DPH
Address: 83h
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
- 11 -
Publication Release Date: December 4, 2008
Revision A9
11 Page | ||
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