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PDF N79E825A Data sheet ( Hoja de datos )
| Número de pieza | N79E825A | |
| Descripción | 8-Bit Microcontroller | |
| Fabricantes | Nuvoton | |
| Logotipo |  |
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N79E825A/824A/823A/822A Data Sheet
8-BIT MICROCONTROLLER
Table of Contents-
1 GENERAL DESCRIPTION .........................................................................................................4
2 FEATURES ................................................................................................................................ 5
3 PARTS INFORMATION LIST .....................................................................................................6
3.1 Lead Free (RoHS) Parts information list.........................................................................6
4 PIN CONFIGURATION .............................................................................................................. 7
5 PIN DESCRIPTION.................................................................................................................... 8
6 FUNCTIONAL DESCRIPTION....................................................................................................9
6.1 On-Chip Flash EPROM ..................................................................................................9
6.2 I/O Ports......................................................................................................................... 9
6.3 Serial I/O ........................................................................................................................ 9
6.4 Timers ............................................................................................................................ 9
6.5 Interrupts........................................................................................................................ 9
6.6 Data Pointers ..................................................................................................................9
6.7 Architecture...................................................................................................................10
6.7.1 ALU ............................................................................................................................ ....10
6.7.2 Accumulator ................................................................................................................... 10
6.7.3 B Register..................................................................................................................... ..10
6.7.4 Program Status Word: .................................................................................................... 10
6.7.5 Scratch-pad RAM ........................................................................................................... 10
6.7.6 Stack Pointer .................................................................................................................. 11
6.8 Power Management......................................................................................................11
7 MEMORY ORGANIZATION......................................................................................................12
7.1 Program Memory (on-chip Flash) .................................................................................12
7.2 Data Memory ................................................................................................................12
7.3 Register Map.................................................................................................................13
7.4 Working Registers.........................................................................................................15
7.5 Bit addressable Locations.............................................................................................15
7.6 Stack ............................................................................................................................ 15
8 SPECIAL FUNCTION REGISTERS .........................................................................................16
9 INSTRUCTION SET................................................................................................................. 47
9.1 Instruction Timing..........................................................................................................56
10 POWER MANAGEMENT..........................................................................................................59
10.1 Idle Mode ......................................................................................................................59
10.2 Power Down Mode .......................................................................................................59
11 RESET CONDITIONS...............................................................................................................61
11.1 Sources of reset............................................................................................................61
11.1.1 External Reset .............................................................................................................. 61
Publication Release Date: Aug 5, 2010
- 1 - Revision A02
http://www.Datasheet4U.com
1 page  
N79E825A/824A/823A/822A Data Sheet
2 FEATURES
• Fully static design 8-bit Turbo 51 CMOS microcontroller up to 20MHz when VDD=4.5V to 5.5V,
12MHz when VDD=2.7V to 5.5V
• 16K/8K/4K/2K bytes of AP Flash EPROM, with ICP and external writer programmable mode.
• 256 bytes of on-chip RAM.
• 256 bytes NVM Data Flash EPROM for customer data storage used and 10K writer cycles; Data
Flash program/erase VDD=3.0V to 5.5V
• Instruction-set compatible with MCS-51.
• Built-in internal RC oscillator (about 6MHz)
• Two 8-bit bi-directional and one 2-bit bi-directional ports.
• Two 16-bit timer/counters.
• 13 interrupts source with four levels of priority.
• One enhanced full duplex serial port with framing error detection and automatic address
recognition.
• The 4 outputs mode and TTL/Schmitt trigger selectable Port.
• Programmable Watchdog Timer.
• Four-channel 10-bit PWM (Pulse Width Modulator).
• Four-channel multiplexed with 10-bits A/D convert.
• One I2C communication port (Master / Slave).
• Eight keypad interrupt inputs.
• Two analog comparators.
• Config urable on-chip oscillator.
• LED drive capability (20mA) on all port pins.
• Brownout voltage detect interrupt and reset.
• Develo pment Tools:
- JTAG ICE(In Circuit Emulation) tool
- ICP(In Circuit Programming) writer
• P ackages:
N79E825ADG ---- PDIP20
N79E825ASG ---- SOP20
N79E825ARG ---- SSOP20
N79E824ADG ---- PDIP20
N79E824ASG ---- SOP20
N79E824ARG ---- SSOP20
N79E823ADG ---- PDIP20
N79E823ASG ---- SOP20
N79E823ARG ---- SSOP20
N79E822ADG ---- PDIP20
Publication Release Date: Aug 05, 2010
- 5 - Revision A02
5 Page 
N79E825A/824A/823A/822A Data Sheet
6.7.6 Stack Pointer
The N7 9E825 seri es hav e an 8-bit Stack Pointer whi ch point s to the top of the Stack. This sta ck
resides in the Scratch Pad RAM in the N79E825 series. Hence the size of t he stack is limited by the
size of this RAM.
6.8 Power Management
Power Mana gement like the stand ard 8052, the N7 9E825 serie s also have th e IDLE and POWE R
DOWN modes of operation. In the IDLE mode, the clock to the CPU is stopped while the timers, serial
ports and interrupt lock continue to operate. In the POWER DOWN mode, all clocks a re stopped and
the chip operation is completely stopped. This is the lowest power consumption state.
- 11 -
Publication Release Date: Aug 05, 2010
Revision A02
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet N79E825A.PDF ] | |
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