MSM64155A Datasheet | OKI Electric

DESCRIPTION This version: Sep. 1998 MSM64155A/64155AL Previous version: Mar. 1996 4-Bit Microcontroller with Built-in LCD Driver and Melody Circuit The MSM64155A (1.5 V)/64155AL (3.0 V) is a high-performance 4-bit microcontroller that incorporates Oki-original CPU core n X-4/20. The MSM64155A/64155AL has an LCD driver for up to 240 segments, an event counter, and melody circuits. It is best suited for applications such as clocks and LCD games. FEATURES - Operating range Operating voltage Operating temperature Operating frequency : 1.5 V/3.0 V : - 40 to +70 °C : 32.768 k Hz crystal oscillation Approx. 32 k Hz RC oscillation Supply current (Typ.) : 0.9 m A (3.0 V at HALT mode) - Minimum instruction execution time : 91 ms - General memory space : 4064 bytes - Local memory space : 256 nibbles - LCD driver : 64 mon driver - 4 Segment driver - 60 1/4 duty, 1/3 bias; 240 segments (60 - 4) 1/3 duty, 1/3 bias; 180 segments (60 - 3) - I/O port Input-output port : 2 ports - 4 bits (open-drain output/CMOS output selectable; pull-down resistor input/high-impedance input selectable) Input port : 1 port - 2 bits (pull-down resistor input/high-impedance input selectable) 1 port - 4 bits (pull-down resistor input/high-impedance input selectable) Output port : 1 port - 4 bits (CMOS output) - Event counter : 1 channel - Melody output :2 - Interrupts : 10 sources External 4, time base 4, melody 2 - Package: 100-pin plastic QFP (QFP100-P-1420-0.65-BK) : (Product name : MSM64155A-- - - GS-BK, MSM64155AL-- - - GS-BK) Chip : MSM64155A-- - - , MSM64155AL-- - - - - - indicates a code number. - OTP version (for program evaluation) : MSM64P155/64P155L (The power polarity and operating voltage of the MSM64P155/64P155L are different from the MSM64155A/64155AL. For details, refer to the "MSM64P155 User's Manual".) 1/26 ¡ Semiconductor MSM64155A/64155AL BLOCK DIAGRAM C2 C1 VSS3 VSS2 VSS1 BIAS TR2 TR0 (4) PCM...