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PDF AT83EB5114 Data sheet ( Hoja de datos )
| Número de pieza | AT83EB5114 | |
| Descripción | Low-pin-count 8-bit microcontroller | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• 80C51 Compatible
– Two I/O Ports
– Two 16-bit Timer/Counters
– 256 bytes RAM
• 4 Kbytes ROM or 4 Kbytes Flash Program Memory
• 256 bytes EEPROM (Stack Die Packaging Technology on SO20 Package)
• X2 Speed Improvement Capability (6 Clocks/Machine Cycle)
• 10-bit, 6 Channels A/D Converter
– One-channel with Progammable Gain and Rectifying Amplifier (Accuracy +/- 5%)
– Voltage Reference for A/D & External Analog
• Hardware Watchdog Timer
• Programmable I/O Mode: Standard C51, Input Only, Push-pull, Open Drain
• Asynchronous Port Reset
• Triple System Clock
– Crystal or Ceramic Oscillator (24 MHz)
– RC Oscillator (12 MHz), with Calibration Factor Using External R and C
(Accuracy +/- 3.5% with Ideal R and C)
– RC Oscillator, Low Power Consumption (12 MHz Low Accuracy)
– Programmable Prescaler
• One PWM Unit Block With:
– 16-bits Programmable Counter
– 3 Independent Modules
• One PWM Unit Block with:
– 16 bits Programmable Counter
– 1 Module
• Interrupt Structure With:
– 7 Interrupt Sources,
– 4 interrupt Priority Levels
• Power Control Modes:
– Idle Mode
– Power-down Mode
– Power Fail Detect, Power On Reset
– Quiet mode for A to D Conversion
• Power Supply: 3 to 3.6V
• Temperature Range: -40 to 85o C
• Package: SO20, SO24 (upon request)
Description
The AT8xEB5114 is a high performance version of the 80C51 8-bit microcontroller in a
Low Pin Count package.
The AT8xEB5114 retains all the features of the standard 80C51 with 4 Kbytes pro-
gram memory, 256 bytes of internal RAM, a 7-source, 4-level interrupt system, an on-
chip oscillator and two timers/counters. AT8xEB5114 may include a serial two wire
interface EEPROM housed together with the microcontroller die in the same package.
The AT8xEB5114 is dedicated for analog interfacing applications. For this, it has a 10-
bit, 6 channels A/D converter and two PWM units; these PWM blocks provide PWM
generation with variable frequency and pulse width.
In addition, the AT8xEB5114 has a Hardware Watchdog Timer and an X2 speed
improvement mechanism. The X2 feature allows to keep the same CPU power at a
divided by two oscillator frequency. The prescaler allows to decrease CPU and periph-
erals clock frequency. The fully static design of the AT8xEB5114 allows to reduce
system power consumption by bringing the clock frequency down to any value, even
DC, without loss of data.
Low-pin-count
8-bit
microcontroller
with A/D
converter
AT83EB5114
AT89EB5114
Rev. 4311C–8051–02/08
1
1 page  
SFR Mapping
AT89/83EB5114
The Special Function Registers (SFRs) of the AT8xEB5114 belong to the following
categories:
• C51 core registers: ACC, AUXR, AUXR1, B, DPH, DPL, PSW, SP, FCON, HSB
• I/O port registers: P3, P4, P3M1, P3M2, P4M1
• Timer registers: TCON, TH0, TH1, TL0, TL1, TMOD
• Power and clock control registers: CKCON, CKRL, CKSEL, OSCBFA, OSCCON,
PCON
• Interrupt system registers: IEN0, IPH0, IPL0, IOR
• WatchDog Timer: WDTRST, WDTPRG
• PWM0 registers: W0CH, W0CL, W0CON, W0FH, W0FL, W0IC, W0MOD, W0R0H,
W0R0L, W0R1H, W0R1L,W0R2H, W0R2L
• PWM1registers: W1CH, W1CL, W1CON, W1FH, W1FL, W1IC, W1R0H, W1R0L
• ADC registers: ADCA, ADCF, ADCLK, ADCON, ADDH, ADDL
4311C–8051–02/08
5
5 Page 
AT89/83EB5114
Clock System
Overview
The AT8xEB5114 oscillator system provides a reliable clocking system with full master-
ing of speed versus CPU power trade-off. Several clock sources are possible:
• External clock input
• High speed crystal or ceramic oscillator
• Integrated accurate oscillator with external R and C.
• Low power consumption Integrated RC oscillator without external components.
The AT8xEB5114 needs 6 clock periods per machine cycle when the X2 function is set.
However, the selected clock source can be divided by 2-32 before clocking the CPU and
the peripherals.
By default, the active oscillator after reset is the high speed crystal/ceramic oscillator.
Any two bits in a hardware configuration byte programmed by a Flash programmer or by
metal mask can activate any other one.
The clock system is controlled by several SFR registers: CKCON, CKSEL, CKRL,
OSCON, PCON and HSB which is the hardware security byte.
Blocks Description
The AT8xEB5114 includes three oscillators:
• Crystal oscillator optimized for 24 MHz.
• 1 accurate oscillator with a typical frequency of 12 MHz.
• 1 low power oscillator with a typical frequency of 14 MHz.
Figure 4. Functional Block Diagram
Xtal1
Xtal2
Xtal_Osc
OSCA
OSCAEN
OSCBEN
PwdOsc
R RC_Osc
OSCB
C Freq. Adjust
LCKEN
RC_Osc
OSCC
OSCCEN
CKRL
11 OscOut
2 down to 32
10 Prescaler-Divider
Mux
01 +
Filter
0
CkOut
1
CKS
OSCBRY
X2
A/D Clock
CkAdc
Peripherals Clock
CkIdle
CPU Clock
Ck
Quiet Pwd Idle
4311C–8051–02/08
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AT83EB5114.PDF ] | |
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