ML63189B Datasheet | OKI Electric

E2E0053-59-71 ¡ Semiconductor ML63187/63189B ¡ Semiconductor This version: Jul. 1999 ML63187/63189B Previous version: Mar. 1999 4-Bit Microcontroller with Built-in 1024-Dot Matrix LCD Drivers and Melody Circuit, Operating at 0.9 V (Min.) GENERAL DESCRIPTION The ML63187/63189B is a CMOS 4-bit microcontroller with built-in 1024-dot matrix LCD drivers and operates at 0.9 V (min.). The ML63187/63189B is suitable for applications such as games, toys, watches, etc. which are provided with an LCD display. The ML63187/63189B is an M6318x series mask ROM-version product of OLMS-63K family, which employs Oki's original CPU core n X-4/250. Features - Rich instruction set 408 instructions Transfer, rotate, increment/decrement, arithmetic operations, parison, logic operations, mask operations, bit operations, ROM table reference, stack operations, flag operations, branch, conditional branch, call/return, control. - Rich selection of addressing modes Indirect addressing of four data memory types, with current bank register, extra bank register, HL register and XY register. Data memory bank internal direct addressing mode. - Processing speed Two clocks per machine cycle, with most instructions executed in one machine cycle. Minimum instruction execution time : 61 ms (@ 32.768 k Hz system clock) 1 ms (@ 2 MHz system clock) - Clock generation circuit Low-speed clock High-speed clock : Crystal oscillation or RC oscillation selected with mask option (30 to 80 k Hz) : Ceramic oscillation or RC oscillation selected with software (2 MHz max.) - Program memory space - ML63187 : 16K words - ML63189B : 32K words Basic instruction length is 16 bits/1 word - Data memory space - ML63187 : 1024 nibbles - ML63189B : 1536 nibbles 1/35 ¡ Semiconductor - Stack level Call stack level Register stack level ML63187/63189B : 16 levels : 16 levels - I/O ports Input ports: Selectable as input with pull-up resistor/input with pull-down resistor/highimpedance input Input-output ports:...