GENERAL DESCRIPTION

The MSM66101 is a high performance microcontroller that employs OKI original nX-8/100 CPU core. This chip includes a 16-bit CPU, ROM, RAM, I/O ports, multifunction 16-bit timers, 10-bit A/D converter, serial I/O port, and pulse width modulator (PWM).

FEATURES

? 64K address space for program memory : Internal ROM : 12K bytes

? 64K address space for data memory : Internal RAM : 384 bytes

? High-speed execution

Minimum cycle for instruction : 400ns @ 10MHz

? Powerful instruction set : Instruction set superior in orthogonal matrix

8/16-bit data transfer instructions

8/16-bit arithmetic instructions

Multiplication and division operation

instructions

Bit manipulation instructions

Bit logic instrucitons

ROM table reference instructions

? Abundant addressing modes : Register addressing

Page addressing

Pointing register indirect addressing

Stack addressing

Immediate value addressing

? I/O port

Input-output port : 5 ports x 8 bits

(Each bit can be assigned to input or output)

Input port : 1 port x 8 bits

? Built-in multifunctional 16-bit timer : 2

Following 4 modes can be set for each timer :Auto-reload timer mode

Clock output mode

Capture register mode

Real time output mode

? Serial port : 1 channel (UART mode with baud rate generator)

? 12-bit pulse width modulator : 2

? Watchdog timer

? Transition detector : 4

? 10-bit A/D converter : 8 channels

? Interrupts

Nonmaskable : 1

Maskable : Internal 10/external 2

? Stand-by function

STOP mode : Software clock stop mode

HALT mode : Software CPU stop mode

HOLD mode : Hardware CPU stop mode

? Package options:

64-pin plastic shrink DIP (SDIP64-P-750-1.78) : (Product name: MSM66101-XXXSS)

64-pin plastic QFP (QFP64-P-1414-0.80-BK) : (Product name: MSM66101-XXXGS-BK)

68-pin plastic QFJ (PLCC) (QFJ68-P-S950-1.27) : (Product name: MSM66101-XXXJS)

64-pin ceramic piggyback (ADIP64-C-750-1.78) : (Product name: MSM66G101VS)