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ST72751N6 Datasheet(PDF) 2 Page - STMicroelectronics |
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ST72751N6 Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 3 page 2/3 ST7275-1 1 GENERAL DESCRIPTION 1.1 INTRODUCTION The ST7275 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 ST7275 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, I/O, a timer with 2 input captures and 2 output compares, an 8- channel Analog to Digital Converter, DDC/DMA, I 2C multi Master, SCI Serial Communications In- terface, Watchdog Reset, an Infra Red Control preprocessor, and one 12-bit and eight 10-bit PWM/BRM outputs for analog DC control of exter- nal functions. Figure 1. ST7275-1 Block Diagram SYNC PROCESSOR POWER SU PPLY OSC /3 or 6 VDD POR T A PORT C DDC TIM ER WATCHDOG PORT D OCMP PWM/BRM PORT B ADC A IN 0-A IN7 DA0 60K Bytes RAM 2K Bytes CONTROL 8-BIT CORE ALU INTERNAL CLOC K VSS OSCOUT OSCIN DA1,DA8 DDC DM A PORT C SCLD SDAD I²C INFRA RED SC I (UART) VR01735Q PA0..6 PA7/BLANKOUT VDD A VSS A PC3/SDAD PC2/RX/SCLD PC0/OCMP/HFBACK RESET HSYNCI1 VSYNCI1 PB1..7/AIN1..7 VFBACK/AIN0 PC1/HSYNCI2 PC4/SCLI PC5/SDAI PC6/RDI PC7/TDO IRIN POWER ON/OFF TDO ROM/ Up to Up to PB0/ PD0/CSYNCI PD1/HSYNCO PD2/VSYNCO PD3/ITC PD4/ITB PD5/ITA PD6/CLAMPOUT PD7/VSYNCI2/ITD OTP/EPROM |
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