LC87F7932B Datasheet, PDF (3/29 Pages) Sanyo Semicon Device – 32K-byte FROM and 2048-byte RAM integrated 8-bit 1-chip Microcontroller

LC87F7932B
„High-speed Clock Counter
(1) Can count clocks with a maximum clock rate of 8MHz (at a main clock of 4MHz).
(2) Can generate output real-time.
„Serial-interface
• SIO 0: 8 bit synchronous serial interface
(1) Synchronous 8-bit serial I/O (2- or 3-wire system, clock rates of (4/3) to (512/3) tCYC)
(2) Continuous data transmission/reception (Variable length data transmission in bit units from 1 to 256 bits,
clock rates of (4/3) to (512/3) tCYC)
(3) Bi-phase modulation (Manchester, Bi-phase-Space) data transmission
(4) LSB first / MSB first is selectable
(5) SPI_function: serial interface that can release HOLD/X’tal HOLD mode after receiving 1-byte (8-bit clock).
• SIO 1: 8 bit asynchronous / synchronous serial interface
Mode 0: Synchronous 8 bit serial IO (2-wire or 3-wire, transmit clock 2–512 tCYC)
Mode 1: Asynchronous serial IO (half duplex, 8 data bits, 1 stop bit, baud rate 8–2048 tCYC)
Mode 2: Bus mode 1 (start bit, 8 data bits, transmit clock 2–512 tCYC)
Mode 3: Bus mode 2 (start detection, 8 data bits, stop detection)
„UART
• Full duplex
• 7/8/9 bit data bits selectable
• 1 stop bit (2-bit in continuous data transmission)
• Built-in baudrate generator
• Operating mode: Programmable transfer mode, fixed-rate transfer mode
• Transmission data conversion: Normal (NRZ), Manchester encoding
„AD converter: 12 bits/8 bits × 7 channels
• 12 bits/8 bits AD converter resolution selectable
„Remote Control Receiver Circuit (Connected to P73 / INT3 / T0IN terminal)
• Noise rejection function (Noise rejection filter’s time constant can be selected from 1 / 32 / 128 tCYC)
„Watchdog Timer
• Watchdog timer can produce interrupt or system reset.
• Watchdog timer has two types.
(1) Use an external RC circuit
(2) Use the microcontroller’s basetimer
• Watchdog timer that used basetimer can select only one period (1 / 2 / 4 / 8 s) by the user option.
„Buzzer Output
• The buzzer output can transmitted from P17 by using basetimer.
„Real Time Clock (RTC)
(1) Used with a basetimer, it can be used as a century + year + month + day + hour + minute + second counter.
(2) Calendar counts up to December 31, 2799 with automatic leap-year calculation.
(3) Gregorian calendar capable of keeping GMT (Greenwich Mean Time).
„Internal Reset Function
• Power-On-Reset (POR) function
− POR resets the system when the power supply voltage is applied.
No.A1841-3/29