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LC87F72C8A Dataheets PDF



Part Number LC87F72C8A
Manufacturers Sanyo
Logo Sanyo
Description 8-Bit Single Chip Microcontroller
Datasheet LC87F72C8A DatasheetLC87F72C8A Datasheet (PDF)

Ordering number : ENN*6712 CMOS IC LC87F72C8A 8-Bit Single Chip Microcontroller with 128 KB Flash Memory and 2048-Byte RAM On Chip Preliminary Overview The LC87F72C8A is an 8 bit single chip microcontroller with the following on-chip functional blocks : - CPU: operable at a minimum bus cycle time of 100 ns - 128K bytes flash ROM (on-board rewritable) - On-chip RAM: 2048 bytes - LCD controller / driver - 16 bit timer / counter (can be divided into two 8 bit timers) - 16 bit timer / PWM (can be .

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Ordering number : ENN*6712 CMOS IC LC87F72C8A 8-Bit Single Chip Microcontroller with 128 KB Flash Memory and 2048-Byte RAM On Chip Preliminary Overview The LC87F72C8A is an 8 bit single chip microcontroller with the following on-chip functional blocks : - CPU: operable at a minimum bus cycle time of 100 ns - 128K bytes flash ROM (on-board rewritable) - On-chip RAM: 2048 bytes - LCD controller / driver - 16 bit timer / counter (can be divided into two 8 bit timers) - 16 bit timer / PWM (can be divided into two 8 bit timers) - Timer for use as date / time clock - Synchronous serial I/O port (with automatic block transmit / receive function) - Asynchronous / synchronous serial I/O port - 12-channel × 8-bit AD converter - Small signal detector - 14-source 10-vectored interrupt system All of the above functions are fabricated on a single chip. Features (1) Flash ROM -Single 5V power supply, on-board writable -Block erase in 128 byte units -131072 × bits (LC87F72C8A) (2) Random Access Memory (RAM): 2048 × 9 bits (LC87F72C8A) Ver.1.04 61899 91400 RM (IM) SK No.6712-1/24 LC87F72C8A (3) Minimum Bus Cycle Time: 100 ns (10 MHz) Note: The bus cycle time indicates ROM read time. (4) Minimum Instruction Cycle Time: 300 ns (10MHz) (5) Ports - Input/output ports Data direction programmable for each bit individually : 26 (P1n, P30-P35, P70-P73, P8n) Data direction programmable in nibble units : 8 (P0n) (When N-channel open drain output is selected, data can be input in bit units.) - Input ports : 2 (XT1,XT2) - LCD ports Segment output : 48 (S00-S47) Common output : 4 (COM0-COM3) Bias terminals for LCD driver 3 (V1-V3) Other functions Input/output ports : 48(PAn,PBn,PCn,PDn,PEn,PFn) Input ports : 7 (PLn) - Oscillator pins : 2 (CF1,CF2) - Reset pin : 1 (RES) - Power supply : 6 (VSS1-3,VDD1-3) (6) LCD controller - Seven display modes are available (static, 1/2, 1/3, 1/4 duty × 1/2, 1/3 bias) - Segment output and common output can be switched to general purpose input/output ports. (7) Small signal detection (MIC signals etc) - Counts pulses with the level which is greater than a preset value - 2 bit counter (8) Timers - Timer 0: 16 bit timer / counter with capture register Mode 0: 2 channel 8-bit timer with programmable 8 bit prescaler and 8 bit capture register Mode 1: 8 bit timer with 8 bit programmable prescaler and 8 bit capture register + 8 bit Counter with 8-bit capture register Mode 2: 16 bit timer with 8 bit programmable prescaler and 16 bit capture register Mode 3: 16 bit counter with 16 bit capture register - Timer 1: PWM / 16 bit timer with toggle output function Mode 0: 2 channel 8 bit timer (with toggle output) Mode 1: 2 channel 8 bit PWM Mode 2: 16 bit timer (with toggle output) Toggle output from lower 8 bits is also possible. Mode 3: 16 bit timer (with toggle output) Lower order 8 bits can be used as PWM. - Base Timer 1) The clock signal can be selected from any of the following : Sub-clock (32.768kHz crystal oscillator), system clock, and prescaler output from timer 0 2) Interrupts of five different time intervals are possible. No.6712-2/24 LC87F72C8A (9) Serial-interface - SIO 0: 8 bit synchronous serial interface 1) LSB first / MSB first is selectable 2) Internal 8 bit baud-rate generator (fastest clock period 4 / 3 Tcyc) 3) Consecutive automatic data communication (1-256 bits) - 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 8–2048Tcyc) 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) (10) AD converter -8 bits × 12 channels (11) 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) (12) Watchdog timer - The watching time period is determined by an external RC. - Watchdog timer can produce interrupt or system reset (13) Interrupts: 14 sources, 10 vectors 1) Three priority (low, high and highest) multiple interrupts are supported. During interrupt handling, an equal or lower priority interrupt request is postponed. 2) If interrupt requests to two or more vector addresses occur at once, the higher priority interrupt takes precedence. In the case of equal priority levels, the vector with the lowest address takes precedence. No. Vector Selectable Level Interrupt signal 1 00003H X or L INT0 2 0000BH X or L INT1 3 00013H H or L INT2/T0L 4 0001BH H or L INT3/Base timer 5 00023H H or L T0H 6 0002BH H or L T1L/T1H 7 00033H H or L SIO0 8 0003BH H or L SIO1 9 00043H H or L ADC/MIC 10 0004BH H or L Port 0 • Priority Level: X>H>L • For equal priority levels, vector with lowest address takes precedence. (14) Subroutine stack levels: 1024 levels max. (15) Multiplication and division - 16 bit × 8 bit (executed in 5 cycles) - 24 bit × 16 .


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