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ST7SCR Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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ST7SCR Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 101 page Apr 2007 1/101 Rev. 4.0 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 ■ 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 VCC 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 LQFP64 14x14 SO24 QFN24 Features ST7FSCR1T1 ST7SCR1T1 ST7FSCR1M1 ST7SCR1M1 ST7SCR1U1 Program memory 16K FLASH 16K ROM 16K FLASH 16K ROM 16K ROM User RAM (stack) bytes 768 (128) 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 1 www.st.com |
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