ST7LCRE4U1 Datasheet, PDF (1/29 Pages) STMicroelectronics – Full-speed USB MCU with smartcard interface

ST7LCRE4U1
ST7LCRDIE6
Full-speed USB MCU with smartcard 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) host interface
– USB 2.0 compliant
– CCID v1.0
– Full speed, hubless
– Bus-powered, low consumption
■ ISO7816-3 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
– Fixed card V_CC: 1.8 V, and 3 V
– Internal step-up converter for 5 V supplied
smartcards (with current of up to 55 mA)
using only two external components
Table 1. Device summary
DIE
VFQFPN24(Y1)
– Programmable smartcard internal voltage
regulator (1.8 to 3.0V) with current overload
protection and 4 kV ESD protection (human
body model) for all smartcard Interface I/Os
■ Development tools
– Full hardware/software development
package.
– Fully compatible with Flash ST7FSCR
family for development purposes
■ ECOPACK^® package
Description
ST7LCRE4U1 and ST7LCRDIE6 are an 8-bit
microcontrollers dedicated to smartcard reading
applications. They have been developed to be the
core of smartcard readers communicating
through USB link. Optimized for mass-market
applications, it offers a single integrated circuit
solution with very few external components.
Features
ST7LCRE4U1
Part numbers
ST7LCRDIE6
Program memory
User RAM + USB data buffer
Peripherals
Operating Supply
Package
CPU Frequency
Operating temperature
16 Kbyte of ROM
512 + 256 bytes
USB full-speed (7 Ep), TBU, watchdog timer, ISO7816-3 interface
4.0 to 5.5 V
VFQFPN24
Die format (Refer to Die Specifications)
4 or 8 MHz
0°C to +70 °C
October 2007
Rev 1
1/29
www.st.com
1