P87C660X2FA-S datasheet
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NXP Semiconductors
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80C51 8-bit microcontroller family 16KB OTP/ROM, 512B RAM low voltage (2.7 to 5.5 V), low power, high speed (30/33 MHZ), two 400KB I2C interfaces - 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: OTP ; Number of pins: 44 ; Operating frequency: 0~30@6-clk0~33@12-clk MHz; Operating temperature: -40~85 Cel; Power supply: 2.7~5.5 ; Program security: yes ; PWMs: 5-ch PCA ; RAM: 512 bytes; Reset active: High ; Serial interface: UART; I2C ; Series: 80C51 family ; System frequency: 0~16@3V0~33@5V MHz; Timers: 4 x 16-bit ; Watchdog timer: yes
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