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Part: LC877296B
Category:
Description: LCD Auto-display Controller/driver (48 Segments X 4 Commons), 8-bit Synchronous ISO With 32-byte Automatic Transfer Function, 8-bit Asynchronous/synchronous Sio, Twelve 8-bit A/D Converter, Tuner PWM Shared Output, Remote Control Receiver Circuit, Small Signal Detection Circuit, High-speed Multiplication And Division Instructions (24 X 16, 24/16, 16 X 8, 16/8) , Package : SQFP
Company: Sanyo Semiconductor Corporation
Datasheet: Download LC877296B datasheet File size : 440 kB
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Datasheet text preview:
Ordering number : ENN*6842
CMOS IC
LC8772C8B/B2B/96B/80B
8-Bit Single-Chip Microcontroller
Preliminary Overview
The LC8772C8B, LC8772B2B LC877296B and LC877280B are 8 bit single chip microcontrollers with the following on-chip functional blocks : - CPU: operable at a minimum bus cycle time of 100 ns - On-chip ROM Maximum Capacity : LC8772C8B 128K bytes LC8772B2B 112K bytes LC877296B 96K bytes LC877280B 80K bytes - On-chip RAM capacity: 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) Read-Only Memory (ROM) - 131072 × 8bits (LC8772C8B) - 114688 × 8bits (LC8772B2B) - 98304 × 8bits (LC877296B) - 81920 × 8bits (LC877280B) (2) Random Access Memory (RAM): 2048 × 9 bits (LC8772C8B, LC8772B2B, LC877296B, LC877280B) (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)
Ver.1.00 N2599
11901 RM (IM) SK No.6842-1/24
LC8772C8B/B2B/96B/80B (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. (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 2512 Tcyc) Mode 1: Asynchronous serial IO (half duplex, 8 data bits, 1 stop bit, baud rate 82048Tcyc) Mode 2: Bus mode 1 (start bit, 8 data bits, transmit clock 2512 Tcyc) Mode 3: Bus mode 2 (start detection, 8 data bits, stop detection) (10) AD converter -8 bits × 12 channels
No.6842-2/24
LC8772C8B/B2B/96B/80B (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 bit (12 cycles) - 16 bit ÷ 8 bit (8 cycles) - 24 bit ÷ 16 bit (12 cycles)
Stack is located in RAM.
(16) Oscillation circuits - On-chip RC oscillation for system clock use. - CF oscillation for system clock use. (Rf built in, Rd external) - Crystal oscillation low speed system clock use. (Rf built in, Rd external) (17) Standby function - HALT mode HALT mode is used to reduce power consumption. During the HALT mode, program execution is stopped but peripheral circuits keep operating (some parts of serial transfer operation stop.) 1) Oscillation circuits are not stopped automatically. 2) Released by the system reset or interrupts. -HOLD mode HOLD mode is used to reduce power consumption. Program execution and peripheral circuits are stopped. 1) CF, RC and crystal oscillation circuits stop automatically. 2) Released by any of the following conditions. (1) Low level input to the reset pin (2) Specified level input to one of INT0, INT1, INT2 (3) Port 0 interrupt
No.6842-3/24
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