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PDF W79L633A Data sheet ( Hoja de datos )

Número de pieza W79L633A
Descripción 8-BIT MICROCONTROLLER
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W79E633A/W79L633A DATA SHEET
8-BIT MICROCONTROLLER
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 4
2. FEATURES ................................................................................................................................. 4
3. PIN CONFIGURATION ............................................................................................................... 6
4. PIN DESCRIPTION..................................................................................................................... 7
4.1 Port 4 .............................................................................................................................. 8
5. MEMORY ORGANIZATION...................................................................................................... 10
5.1 Program Memory (on-chip Flash) ................................................................................. 10
5.2 Data Memory ................................................................................................................ 11
6. SPECIAL FUNCTION REGISTERS ......................................................................................... 12
7. INSTRUCTION SET.................................................................................................................. 42
7.1 Instruction Timing.......................................................................................................... 50
7.1.1 External Data Memory Access Timing............................................................................52
8. POWER MANAGEMENT.......................................................................................................... 55
8.1 Idle Mode ...................................................................................................................... 55
8.2 Power Down Mode ....................................................................................................... 55
9. RESET ...................................................................................................................................... 56
9.1 Reset Conditions........................................................................................................... 56
9.2 External Reset .............................................................................................................. 56
9.3 Power-On Reset (POR) ................................................................................................ 56
9.4 Watchdog Timer Reset ................................................................................................. 56
9.5 Reset State ................................................................................................................... 56
10. INTERRUPTS ........................................................................................................................... 58
10.1 Interrupt Sources .......................................................................................................... 58
10.2 Priority Level Structure ................................................................................................. 59
11. PROGRAMMABLE TIMERS/COUNTERS ............................................................................... 60
11.1 Timer/Counters 0 & 1.................................................................................................... 60
11.1.1 Time-Base Selection ....................................................................................................60
11.1.2 Mode 0 .........................................................................................................................60
11.1.3 Mode 1 .........................................................................................................................61
11.1.4 Mode 2 .........................................................................................................................61
11.1.5 Mode 3 .........................................................................................................................62
11.2 Timer/Counter 2 ............................................................................................................ 62
11.2.1 Capture Mode...............................................................................................................63
11.2.2 Auto-reload Mode, Counting up....................................................................................63
11.2.3 Auto-reload Mode, Counting Up/Down .........................................................................64
11.2.4 Baud Rate Generator Mode .........................................................................................65
12. WATCHDOG TIMER................................................................................................................. 66
13. PULSE-WIDTH-MODULATED (PWM) OUTPUTS ................................................................... 69
Publication Release Date: Oct 08, 2010
- 1 - Revision A6.0

1 page




W79L633A pdf
W79E633A/W79L633A
DEVICE
W79E633A40PL
W79E633A40FL
W79L633A25PL
W79L633A25FL
OPERATING
FREQUENCY
up to 40MHz
up to 40MHz
up to 25MHz
up to 25MHz
OPERATING
VOLTAGE
4.5V ~ 5.5V
4.5V ~ 5.5V
3.0V ~ 4.5V
3.0V ~ 4.5V
PACKAGE
LEAD FREE(ROHS)
PLCC44
QFP44
PLCC44
QFP44
Publication Release Date: Oct 07, 2010
- 5 - Revision A6.0

5 Page





W79L633A arduino
W79E633A/W79L633A
5.2 Data Memory
The W79E(L)633 can access up to 64Kbytes of external Data Memory. This memory region is
accessed by the MOVX instructions. Unlike the 8051 derivatives, the W79E(L)633 contains on-chip
1K-bytes of Data Memory, which only can be accessed by MOVX instructions. The 1-Kbytes of SRAM
located between address 0000h and 03FFh is enabled by setting DMEO bit of PMR register. If MOVX
instruction accesses the addresses greater than 03FFh CPU will automatically access external
memory through Port 0 and 2. In default condition the 1K-bytes SRAM is disabled and any MOVX
directed to the space between 0000h and FFFFh goes to the expanded bus on the Port 0 and 2. The
W79E(L)633 also has the standard 256 bytes of on-chip Scratchpad RAM. This can be accessed
either by direct addressing or by indirect addressing. There are also some Special Function Registers
(SFRs), which can only be accessed by direct addressing. Since the Scratchpad RAM is only 256
bytes, it can be used only when data contents are small.
Figure 5-1 Memory Map
- 11 -
Publication Release Date: Oct 07, 2010
Revision A6.0

11 Page







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