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AT89C5121

AT89C5121 特性

• 80C51 Core
  12 or 6 Clocks per Instruction (X1 and X2 Modes)
  256 Bytes Scratchpad RAM
  Dual Data Pointer
  Two 16-bit Timer/Counters: T0 and T1
• T83C5121 with 16 Kbytes Mask ROM
• T85C5121 with 16 Kbytes Code RAM
• T89C5121 with 16 Kbytes Code RAM and 16 Kbytes EEPROM
• On-chip Expanded RAM (XRAM): 256 Bytes
  Versatile Host Serial Interface
  Full-duplex Enhanced UART (EUART) with Dedicated Baud Rate Generator (BRG):
  Most Standard Speeds up to 230K bits/s at 7.36 MHz
  Output Enable Input
  Multiple Logic Level Shifters Options (1.8V to VCC)
  Automatic Level Shifter Option
• Multi-protocol Smart Card Interface
  Certified with Dedicated Firmware According to ISO 7816, EMV2000, GIE-CB, GSM
  11.12V and WHQL Standards
  Asynchronous Protocols T = 0 and T = 1 with Direct and Inverse Modes
  Baud Rate Generator Supporting All ISO7816 Speeds up to D = 32/F = 372
  Parity Error Detection and Indication
  Automatic Character Repetition on Parity Errors
  Programmable Timeout Detection
  Card Clock Stop High or Low for Card Power-down Mode
  Support Synchronous Card with C4 and C8 Programmable Outputs
  Card Detection and Automatic De-activation Sequence
  Step-up/down Converter with Programmable Voltage Output: 5V, 3V (8% at
  60 mA) and 1.8V (% at 20 mA)
  Direct Connection to Smart Card Terminals:
  Short Circuit Current Limitation
  Logic Level Shifters
  4 kV ESD Protection (MIL/STD 833 Class 3)
• Alternate Card Support with CLK, I/O and RST According to GSM 11.12V Standard
• 2x I/O Ports: 6 I/O Port1 and 8 I/O Port3
• 2x LED Outputs with Programmable Current Sources: 2, 4, or 10 mA
• Hardware Watchdog
• Reset Output Includes
  Hardware Watchdog Reset
  Power-on Reset (POR)
  Power-fail Detector (PFD)
• 4-level Priority Interrupt System with 7 Sources
• 7.36 to 16 MHz On-chip Oscillator with Clock Prescaler
• Absolute CPU Maximal Frequency: 16 MHz in X1 mode, 8MHz in X2 mode
• Idle and Power-down Modes
• Voltage Operation: 2.85V to 5.4V
• Low Power Consumption
  8 mA Operating Current (at 5.4V and 3.68 MHz)
  150 mA Maximum Current with Smart Card Power-on (at 16 MHz X1 Mode)
  30μA Maximum Power-down Current at 3.0V (without Smart Card)
  100 μA Maximum Power-down Current at 5.4V (without Smart Card)
• Temperature Range
  Commercial: 0 to +70°C Operating Temperature
  Industrial: -40 to +85°C Operating Temperature
• Packages
  SSOP24
  QFN32
  PLCC52

AT89C5121 概述

T8xC5121 is a high performance CMOS ROM/CRAM derivative of the 80C51 CMOS
single chip 8-bit microcontrollers.
T8xC5121 retains the features of the Atmel 80C51 with extended ROM capacity (16
Kbytes), 512 bytes of internal RAM, a 4-level interrupt system, two 16-bit timer/counters
(T0/T1), a full duplex enhanced UART (EUART) with baud rate generator (BRG) and an
on-chip oscillator.
In addition, the T8xC5121 have, a Multi protocol Smart Card Interface, a dual data
pointer, 2 programmable LED current sources (2-4-10 mA) and a hardware Watchdog.
T89C5121 Flash RAM version and T85C5121 Code RAM version can be loaded by In-
System Programming (ISP) software residing in the on-chip ROM from a low-cost external
serial EEPROM or from R232 interface.
T8xC5121 have 2 software-selectable modes of reduced activity for further reduction in
power consumption.

AT89C5121 订购型号

Part Number	Code Memory Size (Bytes)	Supply Voltage	Temperature Range	Max Frequency	Package	Packing	Product Marking
AT89C5121- ICSUL	16K Flash RAM	2.85 - 5.4V	Industrial Green	16 MHz	SSOP24	Stick	89C5121-UL
AT89C5121- ICRUL	16K Flash RAM	2.85 - 5.4V	Industrial Green	16 MHz	SSOP24	Tape Reel	89C5121-UL

AT89C5121 应用技术支持与电子电路设计开发资源下载

1. AT89C5121 数据资料 DataSheet 下载. PDF
2. AT89C5121 数据手册DataSheet 下载. PDF
3. 《新闻报道》Atmel 新的單周期8051核心帶來顯著的性能提高與低能耗