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ST72771N5B1 Datasheet(PDF) 2 Page - STMicroelectronics |
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ST72771N5B1 Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 3 page 2/3 ST7277 1 GENERAL DESCRIPTION 1.1 INTRODUCTION The ST7277 is a HCMOS microcontroller unit (MCU) from the ST7 family with dedicated periph- erals for Monitor applications. It is based around an industry standard 8-bit core and offers an enhanced instruction set. The proc- essor runs with an external clock at 24 MHz with a 5V supply. Due to the fully static design of this device, operation down to DC is possible. Under software control the ST7277 can be placed in WAIT or HALT mode thus reducing power con- sumption. The enhanced instruction set and ad- dressing modes afford real programming potential. In addition to standard 8-bit data management the ST7 features true bit manipulation, 8x8 unsigned multiplication and indirect addressing modes. The device includes an on-chip oscillator, CPU, Sync Processor for video timing & Vfback analy- sis, up to 60K ROM, up to 2K RAM, USB/DMA, I/ O, a timer with 2 input captures and 2 output com- pares, an 8-channel Analog to Digital Converter, DDC/DMA, I2C multi Master, SCI Serial Communi- cations Interface, Watchdog Reset, an Infra Red Control preprocessor, and one 12-bit and eight 10- bit PWM/BRM outputs for analog DC control of ex- ternal functions. Figure 1. ST7277 Block Diagram SYNC PROCESSOR POWER SUPPLY OSC /3 or 6 VDD PO RT A PORT C DDC TIMER W ATCHDOG PORT D OCMP PW M/BRM PORT B ADC AIN 0-AIN7 DA0 60K Bytes RAM 2K Bytes USB SIE CONTROL 8-BIT CO RE ALU INTERNAL CLOCK VSS OSCOUT OSCIN DA1,DA8 DDC DMA PORT C SCL D SDAD I C INFRA RED USB DMA SCI (UART) VR01735Q PA0-PA6 PA7/BLANKOUT VDDA VSS A PC3/SDAD PC2/RX/SCLD PC0/O CMP/HFBACK RESET HSYNCI1 VSYN CI1 PB1..7/AIN1..7 VFBAC K/AIN0 PC1/HSYN CI2 PC4/SCLI PC5/SDAI PC6/RD I PC7/TDO IR IN USBVCC USBDP USBDM USBGND POWER ON/OFF TDO ROM Up to Up to PB 0/ PD0/CSYNCI PD1/HSYNCO PD2/VSYNCO PD3/ITC PD4/ITB PD5/ITA PD6/CLAMPOUT PD7/VSYNCI2 |
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