P89LV51RB2BBC datasheet
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NXP Semiconductors
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8-bit 80C51 3 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM - ADCs: - ; Clock type: 12-clk (6-clk opt.) ; External interrupt: 2 ; Function: 8-bit 80C51 uController ; I/O pins: 32 ; Memory size: 16K kBits; Memory type: FLASH ; Number of pins: 44 ; Operating frequency: 0~16/33 (6clk/12clk) MHz; Operating temperature: 0~70 Cel; Power supply: 2.7~3.6 ; Program security: yes ; PWMs: 5-ch PCA ; RAM: 512 bytes; Reset active: High ; Serial interface: UART ; Series: 80C51 family ; Special features: ISP/IAP Flash; 3V operation; SPI ; System frequency: 0~16/33 (6clk/12clk) MHz; Timers: 4 x 16-bit ; Watchdog timer: yes
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