描述 Description

T8xC5121 is a high performance CMOS ROM/CRAM derivative of the 80C51 CMOS single chip 8-bit microcontrollers.

特性 Features

? 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 (±8 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)

– 30 μA 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