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ST7FSCR1R4T1 データシート(PDF) 4 Page - STMicroelectronics |
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ST7FSCR1R4T1 データシート(HTML) 4 Page - STMicroelectronics |
4 / 102 page ST7SCR 4/102 1 INTRODUCTION The ST7SCR and ST7FSCR devices are mem- bers of the ST7 microcontroller family designed for USB applications. All devices are based on a com- mon industry-standard 8-bit core, featuring an en- hanced instruction set. The ST7SCR ROM devices are factory-pro- grammed and are not reprogrammable. The ST7FSCR versions feature dual-voltage Flash memory with Flash Programming capability. They operate at a 4MHz external oscillator fre- quency. Under software control, all devices can be placed in WAIT or HALT mode, reducing power consump- tion when the application is in idle or stand-by state. The enhanced instruction set and addressing modes of the ST7 offer both power and flexibility to software developers, enabling the design of highly efficient and compact application code. In addition to standard 8-bit data management, all ST7 micro- controllers feature true bit manipulation, 8x8 un- signed multiplication and indirect addressing modes. The devices include an ST7 Core, up to 16 Kbytes of program memory, up to 512 bytes of user RAM, up to 35 I/O lines and the following on-chip periph- erals: – USB full speed interface with 7 endpoints, pro- grammable in/out configuration and embedded 3.3V voltage regulator and transceivers (no ex- ternal components are needed). – ISO7816-3 UART interface with Programmable Baud rate from 372 clock pulses up to 11.625 clock pulses – Smartcard Supply Block able to provide pro- grammable supply voltage and I/O voltage levels to the smartcards – Low voltage reset ensuring proper power-on or power-off of the device (selectable by option) – Watchdog Timer – 8-bit Timer (TBU) Figure 1. ST7SCR Block Diagram 8-BIT CORE ALU OSCIN OSCOUT PA6 4MHz CONTROL RAM (512 Bytes) PROGRAM (16K Bytes) MEMORY 8-BIT TIMER LVD VPP USBDP USBDM USBVCC PORT C PC[7:0] PB[7:0] PA[5:0] SUPPLY MANAGER PLL OSCILLATOR USB PORT B PORT A USB DATA BUFFER (256 bytes) DIVIDER 8 MHz 3V/1.8V Vreg DC/DC CRDDET CRDIO CRDC4 CRDC8 CRDRST CRDCLK PD[7:0] ISO7816 UART PORT D CONVERTER CRDVCC SELF WATCHDOG LED LED[3:0] or 4 MHz 48 MHz DIODE 1 |
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同様の説明 - ST7FSCR1R4T1 |
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