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AT87C5112 Dataheets PDF



Part Number AT87C5112
Manufacturers ATMEL Corporation
Logo ATMEL Corporation
Description 8-bit Microcontroller with A/D Converter
Datasheet AT87C5112 DatasheetAT87C5112 Datasheet (PDF)

Features • 80C51 Compatible – Five I/O Ports – Two 16-bit Timer/Counters – 256 Bytes RAM 8K Bytes ROM/OTP Program Memory with 64 Bytes Encryption Array and 3 Security Levels High-Speed Architecture – 33 MHz at 5V (66 MHz Equivalent) – X2 Speed Improvement Capability (6 Clocks/Machine Cycle) 10-bit, 8 Channels A/D Converter Hardware Watchdog Timer with Reset-out Programmable I/O Mode: Standard C51, Input Only, Push-pull, Open Drain Asynchronous Port Reset Full Duplex Enhanced UART with Baud Rate .

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Features • 80C51 Compatible – Five I/O Ports – Two 16-bit Timer/Counters – 256 Bytes RAM 8K Bytes ROM/OTP Program Memory with 64 Bytes Encryption Array and 3 Security Levels High-Speed Architecture – 33 MHz at 5V (66 MHz Equivalent) – X2 Speed Improvement Capability (6 Clocks/Machine Cycle) 10-bit, 8 Channels A/D Converter Hardware Watchdog Timer with Reset-out Programmable I/O Mode: Standard C51, Input Only, Push-pull, Open Drain Asynchronous Port Reset Full Duplex Enhanced UART with Baud Rate Generator SPI, Master Mode Dual System Clock – Crystal or Ceramic Oscillator (33/40 MHz) – Internal RC Oscillator (12 MHz) – Programmable Prescaler Programmable Counter Array with High-speed Output, Compare/Capture, Pulse Width Modulation and Watchdog Timer Capabilities Interrupt Structure – 8 Interrupt Sources – 4 Interrupt Priority Levels Power Control Modes – Idle Mode – Power-down Mode – Power-off Flag Power Supply: 2.7 - 5.5V Temperature Range: Industrial (-40 To 85°C) Package: LQFP48 (Body 7*7*1.4 mm), PLCC52 • • • • • • • • • 8-bit Microcontroller with A/D Converter • • • AT80C5112 AT83C5112 AT87C5112 • • • Description The AT8xC5112 is a high performance ROM/OTP version of the 80C51 8-bit microcontroller. The AT8xC5112 retains all the features of the standard 80C51 with 8 Kbytes ROM/OTP program memory, 256 bytes of internal RAM, a 8-source, 4-level interrupt system, an on-chip oscillator and two timer/counters. The AT8xC5112 is dedicated for analog interfacing applications. For this, it has a 10bit, 8 channels A/D converter and a five channels Programmable Counter Array. In addition, the AT8xC5112 has a Hardware Watchdog Timer, a versatile serial channel that facilitates multiprocessor communication (EUART) with an independent baud rate generator, a SPI serial bus controller and a X2 speed improvement mechanism. The X2 feature allows to keep the same CPU power at a divided by two oscillator frequency. The fully static design of the AT8xC5112 allows to reduce system power consumption by bringing the clock frequency down to any value, even DC, without loss of data. Rev. 4191B–8051–04/03 The AT8xC5112 has 3 software-selectable modes of reduced activity for further reduction in power consumption. In the idle mode, the CPU is frozen while the peripherals are still operating. In the quiet mode, the A/D converter is only operating. In the Power-down mode, the RAM is saved and all other functions are inoperative. Two oscillators source, crystal and RC, provide a versatile power management. The AT8xC5112 is proposed in 48-/52-pin count packages with Port 0 and Port 2 (address/ data buses). Block Diagram CEX0-4 RxD TxD Vcc Vss ECI SPSCK MISO MOSI (2) (2) (2) XTAL1 (2) XTAL2 Xtal Osc EUART BRG (1) (1) (3)(3) (3) (3) RAM 256 x8 ROM /OTP PCA SPI SS Watch Dog 8 K *8 C51 CORE RC Osc IB-bus CPU RST EA ALE PSEN Timer 0 Timer 1 INT Ctrl A/D Converter Parallel I/O Ports Port 1 Port 3 Port 4 Port 0 Port 2 INT0 INT1 AIN0-7 (2) VPP (2) (3) T.


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