P80C31X2BN datasheet
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NXP Semiconductors
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80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage (2.7 to 5.5 V), low power, high speed (30/33 MHz) - ADCs: - ; Clock type: 12-clk (6-clk opt.) ; External interrupt: 2 ; Function: 8-bit 80C51 uController ; I/O pins: 32 ; Memory size: - kBits; Memory type: ROMless ; Number of pins: 40 ; Operating frequency: 0~30@6-clk0~33@12-clk MHz; Operating temperature: 0~70 Cel; Power supply: 2.7~5.5 ; Program security: no ; PWMs: - ; RAM: 128 bytes; Reset active: High ; Serial interface: UART ; Series: 80C51 family ; System frequency: 0~16@3V0~33@5V MHz; Timers: 3 x 16-bit ; Watchdog timer: no
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