|
|
PDF AT89C51AC3 Data sheet ( Hoja de datos )
| Número de pieza | AT89C51AC3 | |
| Descripción | Enhanced 8-bit Microcontroller | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AT89C51AC3 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
Features
• 80C51 Core Architecture
• 256 Bytes of On-chip RAM
• 2048 Bytes of On-chip ERAM
• 64K Bytes of On-chip Flash Memory
– Data Retention: 10 Years at 85°C
– Read/Write Cycle: 100K
• Boot Code Section with Independent Lock Bits
• 2K Bytes of On-chip Flash for Bootloader
• In-System Programming by On-Chip UART Boot Program and IAP Capability
• 2K Bytes of On-chip EEPROM
Read/Write Cycle: 100K
• Integrated Power Monitor (POR: PFD) To Supervise Internal Power Supply
• 14-sources 4-level Interrupts
• Three 16-bit Timers/Counters
• Full Duplex UART Compatible 80C51
• High-speed Architecture
– In Standard Mode:
40 MHz (Vcc 3V to 5.5V, both Internal and external code execution)
60 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
– In X2 mode (6 Clocks/machine cycle)
20 MHz (Vcc 3V to 5.5V, both Internal and external code execution)
30 MHz (Vcc 4.5V to 5.5V and Internal Code execution only)
• Five Ports: 32 + 4 Digital I/O Lines
• Five-channel 16-bit PCA with
– PWM (8-bit)
– High-speed Output
– Timer and Edge Capture
• Double Data Pointer
• 21-bit WatchDog Timer (7 Programmable Bits)
• A 10-bit Resolution Analog to Digital Converter (ADC) with 8 Multiplexed Inputs
• SPI Interface (PLCC52 and VPFP64 packages only)
• On-chip Emulation Logic (Enhanced Hook System)
• Power Saving Modes
– Idle Mode
– Power-down Mode
• Power Supply: 3 volts to 5.5 volts
• Temperature Range: Industrial (-40° to +85°C)
• Packages: VQFP44, PLCC44, VQFP64, PLCC52
Enhanced 8-bit
Microcontroller
with 64KB Flash
Memory
AT89C51AC3
Description
The AT89C51AC3 is a high performance Flash version of the 80C51 single chip 8-bit
microcontrollers.
In X2 mode a maximum external clock rate of 20 MHz reaches a 300 ns cycle time.
Besides the AT89C51AC3 provides 64K Bytes of Flash memory including In-System
Programming (ISP) and IAP, 2K Bytes Boot Flash Memory, 2K Bytes EEPROM and
2048 byte ERAM.
Primary attention is paid to the reduction of the electro-magnetic emission of
AT89C51AC3.
Rev. 4383D–8051–02/08
1 page  
AT89C51AC3
Pin Name
VSS
TESTI
VCC
VAREF
VAGND
P0.0:7
P1.0:7
P2.0:7
Type Description
GND Circuit ground
I Must be connected to VSS
Supply Voltage
Reference Voltage for ADC
Reference Ground for ADC
I/O Port 0:
Is an 8-bit open drain bi-directional I/O port. Port 0 pins that have 1’s written to them float, and in this state can be used as
high-impedance inputs. Port 0 is also the multiplexed low-order address and data bus during accesses to external Program
and Data Memory. In this application it uses strong internal pull-ups when emitting 1’s.
Port 0 also outputs the code Bytes during program validation. External pull-ups are required during program verification.
I/O Port 1:
Is an 8-bit bi-directional I/O port with internal pull-ups. Port 1 pins can be used for digital input/output or as analog inputs for
the Analog Digital Converter (ADC). Port 1 pins that have 1’s written to them are pulled high by the internal pull-up transistors
and can be used as inputs in this state. As inputs, Port 1 pins that are being pulled low externally will be the source of current
(IIL, see section "Electrical Characteristic") because of the internal pull-ups. Port 1 pins are assigned to be used as analog
inputs via the ADCCF register (in this case the internal pull-ups are disconnected).
As a secondary digital function, port 1 contains the Timer 2 external trigger and clock input; the PCA external clock input and
the PCA module I/O.
P1.0/AN0/T2
Analog input channel 0,
External clock input for Timer/counter2.
P1.1/AN1/T2EX
Analog input channel 1,
Trigger input for Timer/counter2.
P1.2/AN2/ECI
Analog input channel 2,
PCA external clock input.
P1.3/AN3/CEX0
Analog input channel 3,
PCA module 0 Entry of input/PWM output.
P1.4/AN4/CEX1
Analog input channel 4,
PCA module 1 Entry of input/PWM output.
P1.5/AN5/CEX2
Analog input channel 5,
PCA module 2 Entry of input/PWM output.
P1.6/AN6/CEX3
Analog input channel 6,
PCA module 3 Entry of input/PWM output.
P1.7/AN7/CEX4
Analog input channel 7,
PCA module 4 Entry ot input/PWM output.
Port 1 receives the low-order address byte during EPROM programming and program verification.
It can drive CMOS inputs without external pull-ups.
I/O Port 2:
Is an 8-bit bi-directional I/O port with internal pull-ups. Port 2 pins that have 1’s written to them are pulled high by the internal
pull-ups and can be used as inputs in this state. As inputs, Port 2 pins that are being pulled low externally will be a source of
current (IIL, see section "Electrical Characteristic") because of the internal pull-ups. Port 2 emits the high-order address byte
during accesses to the external Program Memory and during accesses to external Data Memory that uses 16-bit addresses
(MOVX @DPTR). In this application, it uses strong internal pull-ups when emitting 1’s. During accesses to external Data
Memory that use 8 bit addresses (MOVX @Ri), Port 2 transmits the contents of the P2 special function register.
It also receives high-order addresses and control signals during program validation.
It can drive CMOS inputs without external pull-ups.
4383D–8051–02/08
5
5 Page 
AT89C51AC3
SFR Mapping
The Special Function Registers (SFRs) of the AT89C51AC3 fall into the following
categories:
Mnemonic Add Name
7654321
ACC
E0h Accumulator
–––––––
B F0h B Register
–––––––
PSW
D0h Program Status Word
CY
AC
F0 RS1 RS0 OV
F1
SP 81h Stack Pointer
–––––––
Data Pointer Low
DPL 82h byte
–––––––
LSB of DPTR
Data Pointer High
DPH
83h byte
–––––––
MSB of DPTR
0
–
–
P
–
–
–
Mnemonic Add Name
P0 80h Port 0
P1 90h Port 1
P2 A0h Port 2
P3 B0h Port 3
P4 C0h Port 4 (x5)
76543210
––––––––
––––––––
––––––––
––––––––
–
–
–
P4.4 /
MOSI
P4.3 /
SCK
P4.2 /
MISO
P4.1
P4.0
Mnemonic Add Name
TH0
8Ch
Timer/Counter 0 High
byte
TL0
8Ah
Timer/Counter 0 Low
byte
TH1
8Dh
Timer/Counter 1 High
byte
TL1
8Bh
Timer/Counter 1 Low
byte
TH2
CDh
Timer/Counter 2 High
byte
TL2
CCh
Timer/Counter 2 Low
byte
TCON
88h
Timer/Counter 0 and
1 control
TMOD
89h
Timer/Counter 0 and
1 Modes
7
–
–
–
–
–
–
TF1
GATE1
6
–
–
–
–
–
–
TR1
C/T1#
5
–
–
–
–
–
–
TF0
M11
4
–
–
–
–
–
–
TR0
M01
3
–
–
–
–
–
–
IE1
GATE0
2
–
–
–
–
–
–
IT1
C/T0#
1
–
–
–
–
–
–
IE0
M10
0
–
–
–
–
–
–
IT0
M00
4383D–8051–02/08
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AT89C51AC3.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AT89C51AC2 | Enhanced 8-bit Microcontroller | ATMEL Corporation |
| AT89C51AC3 | Enhanced 8-bit Microcontroller | ATMEL Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |