LC866432A

The LC866432A is a kind of 8-bit single chip microcontroller with the following on-chip functional blocks: (1)CPU: operable at a minimum bus cycle time of 0.5s (microsecond); (2)on-chip ROM maximum capacity: 32 K bytes; (3)on-chip RAM capacity: 768 bytes; (4)VFD automatic display controller/driver; (5)16-bit timer/counter (or two 8-bit timers); (6)16-bit timer/PWM (or two 8-bit timers); (7)8 channel*8-bit AD converter; (8)two 8-bit synchronous serial-interface circuit (1-channel*16-bit, 1-channel*8-bit); (9)14-source 10-vectored interrupt system.

There are some features of LC866432A as follows: (1)read-only memory (ROM): 32768*8 bits; (2)random access memory (RAM): 768*8 bits ; (3)AD converter: 8-channel*8-bit AD converter; (4)buzzer output: the buzzer sound frequency selectable: 4 KHz, 2 KHz (using 32,768 kHz crystal oscillation for base timer clock); (5)watchdog timer: the watchdog timer is taken on RC outside; watchdog timer operation selectable: interrupt system, system reset; (6)subroutine stack levels: 128 levels (max.): stack area included in RAM area; (7)multiplication and divison: 16-bit*8-bit (7 instruction cycle times) and 16-bit/8-bit (7 instruction cycle times) ; (8)three oscillation circuits: on-chip RC oscillation circuit using for the system clock; (9)on-chip CF oscillator circuit using for the system clock; (10)on-chip crystal oscillator circuit using for the system clock and for time-base clock.

The following is the absolute maximum ratings of LC866432A at VSS1=VSS2=0 V and Ta=25: (1) supply voltage at VDD1, VDD2 pins, VDD MAX: -0.3 to +7.0 V; (2)output voltage at S0/T0 to S15/T15 pins, VO: VDD-45 to VDD+0.3 V; (3)power dissipation, Pdmax at Ta=-30 to +70: 490 mW; (4)operating temperature range, Topr: -30 to 70; (5)storage temperature range, Tstg: -65 to 150.