ST7GEME4M1 datasheet(1/28 Pages) STMICROELECTRONICS

tên linh kiện	ST7GEME4M1

Giải thích chi tiết về linh kiện	Full-speed USB MCU with smartcard firmware and EMV/non-EMV interface

PDF	28 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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1 / 28 page

September 2007

Rev 2.0

1/28

1

ST7GEME4

Full-speed USB MCU with smartcard firmware

and EMV/non-EMV interface

Features

■

Clock, reset and supply management

– Low voltage reset

– Halt power saving mode

– PLL for generating 48 MHz USB clock

using a 4 MHz crystal

■

USB (Universal Serial Bus) interface

– USB 2.0 compliant

– CCID V1.0

– Full speed, hubless

– Bus-powered, low consumption

■

Serial RS232 interface

– Transmission rate: 9.6 Kbps to 115 Kbps

– Format: 8-bit, no parity

– Auto baud rate

– CCID V1.0 on serial TTL link

■

ISO 7816-3 UART interface

– 4 Mhz clock generation

– Synchronous/Asynchronous protocols

(T=0, T=1)

– Automatic retry on parity error

– Programmable baud rate from 372 to

11.625 clock pulses (D=32/F=372)

– Card insertion/removal detection

■

Smartcard power supply

– Selectable card VCC: 1.8 V, 3 V, and 5 V

– Internal Step-up converter for 5V supplied

Smartcards (with a current of up to 55mA)

using only two external components.

– Programmable smartcard internal voltage

regulator (1.8 to 3.0 V) with current

overload protection and 4 kV ESD

protection (Human Body Model) for all

smartcard interface I/Os

■

Development tools

– Application note on PCB recommendations

and component bill of materials

– Full hardware/software kit for performance

evaluation

Description

The ST7GEME4 is an 8-bit microcontroller

dedicated to smartcard reading applications. It

has been developed to be the core of smartcard

readers communicating through a serial or USB

link. It is pre-programmed using Gemplus

software, and offers a single integrated circuit

solution with very few external components.

24

1

VFQFPN24

SO24(9U)

Table 1.

Device summary

Features

Order codes

ST7GEME4M1

ST7GEME4U1

Program memory

16K ROM

User RAM + USB data buffer (bytes)

512 + 256

Peripherals

USB Full-Speed (7 Ep), TBU, Watchdog timer, ISO 7816-3 Interface

Operating Supply

4.0 to 5.5 V

Package

SO24

VFQFPN24

CPU Frequency

4 or 8 MHz

Operating temperature

0 to +70 °C

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