Document
MITSUBISHI MICROCOMPUTERS
7531 Group
DESCRIPTION
The 7531 Group is the 8-bit microcomputer based on the 740 family
core technology.
The 7531 Group has a serial I/O, 8-bit timers, and an A-D converter,
and is useful for control of home electric appliances and office auto-
mation equipment.
FEATURES
• Basic machine-language instructions ....................................... 69 • The minimum instruction execution time .......................... 0.50 µs
(at 8 MHz oscillation frequency for the shortest instruction, in high-
speed mode)
• Memory size ROM .............................................. 8K to 16K bytes
RAM .............................................. 256 to 384 bytes
• Programmable I/O ports ........................................................... 29
(25 in 32-pin version)
• Interrupts .................................................... 12 sources, 8 vectors
(11 sources, 8 vectors for 32-pin version)
• Timers ................................................