Description

The CXP508L4/508L6 is a CMOS 4-bit microcomputer which consists of 4-bit CPU, ROM, RAM, I/O port, 8-bit timer, 8-bit timer/counter, 18-bit time base timer, 8-bit serial I/O, vector interruption, and a liquid crystal displayer (LCD) controller/driver. They are integrated into a single clip with the standby function etc. which are to be operated at low power consumption.

Features

? Instruction cycle 4μs/2MHz (2.4V to 3.5V)

? ROM capacity 4.096 × 8 bits (CXP508L4) 6.144 × 8 bits (CXP508L6)

? RAM capacity 400 × 4 bits (24 × 4 bits is used in combination with the LCD display memory)

? 32 general purpose I/O ports (For 16 segment outputs)

? LCD controller/driver (Direct drive possible)

— Optical specification of 24, 20 or 16 segment outputs

— 1/2, 1/3, 1/4 duty selectable through program

— 1/3 bias

? 2 external interruption input pins

? 8-bit/4-bit variable serial I/O

? 8-bit timer, 8bit timer/event counter and 18-bit time base timer are independently controllable

? Arithmetic and logical operations possible between the entire RAM area, I/O area and the accumulator by means of memory mapped I/O

? Reference to the entire ROM area is possible with the table look-up instruction

? 2 types of power down models, sleep and stop

? 64-pin plastic SDIP/QFP available

? Piggy back package (CXP5080) available