ST7SCR_07 Datasheet, PDF (1/101 Pages) STMicroelectronics – 8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER

ST7SCR
8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K
FLASH, 768 RAM, SMARTCARD I/F, TIMER
■ Memories
– Up to 16K of ROM or High Density Flash (HD-
Flash) program memory with read/write pro-
tection, HDFlash In-Circuit and In-Application
Programming. 100 write/erase cycles guaran-
teed, data retention: 40 years at 55°C
– Up to 768 bytes of RAM including up to 128
bytes stack and 256 bytes USB buffer
■ Clock, Reset and Supply Management
– Low Voltage Reset
– 2 power saving modes: Halt and Wait modes
– PLL for generating 48 MHz USB clock using a
4 MHz crystal
■ Interrupt Management
– Nested Interrupt Controller
■ USB (Universal Serial Bus) Interface
– 256-byte buffer for full speed bulk, control and
interrupt transfer types compliant with USB
specification (version 2.0)
– On-Chip 3.3V USB voltage regulator and
transceivers with software power-down
– 7 USB Endpoints:
One 8-byte Bidirectional Control Endpoint
One 64-byte In Endpoint,
One 64-byte Out Endpoint
Four 8-byte In Endpoints
■ 35 or 4 I/O ports
– Up to 4 LED outputs with software program-
mable constant current (3 or 7 mA).
– 2 General purpose I/Os programmable as in-
terrupts
– Up to 8 line inputs programmable as interrupts
– Up to 20 Outputs
– 1 line assigned by default as static input after
reset
LQFP64 14x14
SO24
QFN24
■ 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 clock puls-
es up to 11.625 clock pulses (D=32/F=372)
– Card Insertion/Removal Detection
■ Smartcard Power Supply
– Selectable card V_CC 1.8V, 3V, and 5V
– Internal Step-up converter for 5V supplied
Smartcards (with a current of up to 55mA) us-
ing only two external components.
– Programmable Smartcard Internal Voltage
Regulator (1.8V to 3.0V) with current overload
protection and 4 KV ESD protection (Human
Body Model) for all Smartcard Interface I/Os
■ One 8-bit Timer
– Time Base Unit (TBU) for generating periodic
interrupts.
■ Development Tools
– Full hardware/software development package
Table 1. Device Summary
Features
Program memory
User RAM (stack) bytes
ST7FSCR1T1
16K FLASH
ST7SCR1T1
16K ROM
ST7FSCR1M1
16K FLASH
768 (128)
ST7SCR1M1
16K ROM
ST7SCR1U1
16K ROM
Peripherals
USB Full-Speed (7 Ep), TBU, Watchdog timer, ISO7816-3 Interface
Operating Supply
4.0 to 5.5V
CPU Frequency
4 or 8 Mhz
Operating temperature
0°C to +70°C
Package
LQFP64
SO24
QFN24
Apr 2007
Rev. 4.0
1/101
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