GENERAL DESCRIPTION

The MSM66509/66P509 is a high-performance 16-bit microcontroller that employs OKI original nX-8/500 CPU core.

The MSM66509/66P509 includes a 16-bit CPU, ROM, RAM, a 10-bit A/D converter, serial ports, flexible timers, pulse-width modulator (PWM), and I/O ports.

FEATURES

• Program memory space : 64K bytes

Internal ROM : 64K bytes

• Data memory space : 64K bytes

Internal RAM : 2K bytes

• High-speed execution

Minimum instruction execution time : 125nsec @ 32MHz

• 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 instructions

ROM table reference instructions

• Abundant addressing modes : Register addressing

Page addressing

Pointing register indirect addressing

Stack addressing

Immediate addressing

• I/O port

Analog input port : 1 port · 16 bits

Input-output port : 11 ports · 8 bits, 1 port · 4 bits

(Input/output setting available in bit unit)

• Flexible timers

Free run counters : 19-bit · 1, 16-bit · 1

19-bit CAP with a divider : 4

16-bit double buffer RTO : 6

16-bit PWM/RTO : 2

16-bit CAP/RTO : 2

• 8-bit general timer : 1

8-bit event counter : 1

• 16-bit PWM : 6

Input clock divider : 4

• Serial ports

UART mode with BRG : 1

Synchronous/UART switchable mode

with BRG : 1

• 10-bit A/D converter : 16 channels

• Transition detector : 6

• Watchdog timer : 1

• Interrupts

Non-maskable : 1

Maskable : Internal 32/external 2

(4-level priority can be set)

• ROM window function

• Standby modes

HALT mode

STOP mode

• Package

128-pin plastic QFP (QFP128-P-2828-0.80-BK) : (Product name: MSM66509-xxxGS-BK)

··· indicates the code number.