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CTM8B54E/55E/56E/57E
EPROM-Based 8-Bit CMOS Microcontroller
FEATURES
• Total of 33 single word instructions . • The fast execution time may be 200ns for all single cycle instructions under 20MHz operating. • Operating voltage range: 2.3V ~ 6.5V • 8-bit data bus. • 14-bit instruction word. • Four-level stacks. • On chip EPROM size : 512x14 bits for CTM8B54E/55E, 1Kx14 bits for CTM8B56E, 2Kx14 bits for CTM8B57E. • Internal RAM size : 25 bytes for CTM8B54E/56E, 24 bytes for CTM8B55E, • 72 bytes for CTM8B57E. • Direct and indirect addressing modes for data accessing • 8-bit real time clock/counter with 8-bit programmable prescaler. • Internal power-on Reset. • Device Reset Timer. • Code protection. • Sleep mode for power saving.