LC5739

Ordering number : ENN*6704 CMOS IC LC5739 4-Bit Microcontroller with LCD Driver Preliminary Overview The LC5739 is a CMOS 4-bit microcontroller that operates on low voltage and very low power consumption. It also contains 4K-byte ROM, 128-byte RAM, LCD drivers and melody function. Features (1) ROM (2) RAM (3) Cycle Time Cycle Time 122µs 122µs 122µs Oscillation source Crystal oscillation RC oscillation Crystal oscillation Crystal oscillation RC oscillation Oscillation frequency 32.768kHz 32.768kHz 32.768kHz Power supply voltage 1.30 - 1.65V 2.60 - 3.60V 2.60 - 3.60V Power source Ag Battery Li Battery External voltage supply :4096 × 8 bits :128 × 4 bits (4) Input / Output Terminals - Input ports - Input / Output ports - Output ports : 4 terminals (S-port : 4 terminals) : 8 terminals (P0 port : 4 terminals, P1 port : 4 terminals) : 2 terminals (Buzzer / melody output terminal : 1 terminal, General output port : 1 terminal) - LCD segment output ports : 32 terminals (Possible to use output port by mask option) - LCD common output ports : 4 terminals Ver.1.14 22698 91400 RM (IM) HO No.6704-1/18 LC5739 (5) LCD driver Drivable LCD panel 1/2 bias 1/4 duty 1/2 bias 1/3 duty 1/2 bias 1/2 duty STATIC Number of drivable LCD segment output 128 segments 96 segments 64 segments 32 segments (Possible to use output port by mask option.) - Built-in Step-up / Step-down circuit (6) Melody/Buzzer - Melody function - Buzzer output (7) Base timer - 15-bit base timer for timekeeping (8) HAL...