T85C5121
T85C5121 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
T85C5121 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.
T85C5121 订购型号
| Part Number |
Code Memory
Size (Bytes) |
Supply Voltage |
Temperature
Range |
Max Frequency |
Package |
Packing |
Product
Marking |
| T85C5121-ICSIL |
16K RAM |
2.85 - 5.4V |
Industrial |
16 MHz |
SSOP24 |
Stick |
85C5121-IL |
| T85C5121-ICRIL |
16K RAM |
2.85 - 5.4V |
Industrial |
16 MHz |
SSOP24 |
Tape Reel |
85C5121-IL |
| T85C5121-S3SIL |
16K RAM |
2.85 - 5.4V |
Industrial |
16 MHz |
PLCC52 |
Stick |
85C5121-IL |
| T85C5121-S3RIL |
16K RAM |
2.85 - 5.4V |
Industrial |
16 MHz |
PLCC52 |
Tape Reel |
85C5121-IL |
T85C5121 应用技术支持与电子电路设计开发资源下载
- T85C5121 数据手册DataSheet 下载. PDF
- 《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
