P87LPC762BN

The P87LPC762BN belongs to 87LPC762 family which is a 20-pin single-chip microcontroller designed for low pin count applications demanding high-integration, low cost solutions over a wide range of performance requirements and a member of the Philips low pin count family. The 87LPC762 offers programmable oscillator configurations for high and low speed crystals or RC operation, wide operating voltage range, programmable port output configurations, selectable Schmitt trigger inputs, LED drive outputs, and a built-in watchdog timer. The 87LPC762 is based on an accelerated 80C51 processor architecture that executes instructions at twice the rate of standard 80C51 devices.

Some features of P87LPC762BN can be summarized as (1)an accelerated 80C51 CPU provides instruction cycle times of 300600ns for all instructions except multiply and divide when executing at 20 MHz. execution at up to 20 MHz when VDD = 4.5 V to 6.0 V, 10 MHz when VDD = 2.7 V to 6.0 V; (2)2.7 V to 6.0 V operating range for digital functions; (3)2 kbytes EPROM code memory; (4)128 byte RAM data memory; (5)32-byte customer code EPROM allows serialization of devices, storage of setup parameters, etc; (6)two 16-bit counter/timers. each timer may be configured to toggle a port output upon timer overflow; (7)two analog comparators; (8)full duplex UART; (9)I2C communication port; (10)eight keypad interrupt inputs, plus two additional external interrupt inputs.; (11)four interrupt priority levels; (12)watchdog timer with separate on-chip oscillator, requiring no external components. The watchdog timeout time is selectable from 8 values; (13)active low reset. on-chip power-on reset allows operation with no external reset components; (14)low voltage reset. One of two preset low voltage levels may be selected to allow a graceful system shutdown when power fails. May optionally be configured as an interrupt; (15)oscillator fail detect. The watchdog timer has a separate fully on-chip oscillator, allowing it to perform an oscillator fail detect function.

The absolute maximum ratings of P87LPC762BN are (1)operating temperature under bias: 55 to +125 °C; (2)storage temperature range: 65 to +150 °C; (3)voltage on RST/VPP pin to VSS: 0 to +11.0 V; (4)voltage on any other pin to VSS: 0.5 to VDD+0.5V V; (5)maximum IOL per I/O pin: 20 mA; (6)power dissipation (based on package heat transfer, not device power consumption): 1.5 W(1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any conditions other than those described in the AC and DC Electrical Characteristics section of this specification are not implied. 2. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maximum. 3. Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to VSS unless otherwise noted.).