GENERAL DESCRIPTION
The MTU410 is a single chip 4-bit microcontroller with LCD drivers. It can drive up to 3 common times or 25 segments, i.e. a 75-segment LCD driver. This 4-bit microcontroller contains a 4-bit parallel processing ALU, 1024 x 15-bit program ROM, 64 x 4-bit data RAM, input/output ports, alarm driver, timer, clock generator, crystal and RC oscillator circuit, LCD driver and 79 powerful instructions in a single chip. The HALT instruction can be used to stop all internal operations other than timer, clock generator, crystal/RC oscillator and LCD driver. Very low current dissipation can be easily achieved by combining 4 kinds of interrupt functions and HALT instruction to minimize the operation cycle.

FEATURES
• Very low current dissipation.
• Wide operating voltage range.
• Supports both Ag and Li batteries.
• Powerful instruction set.
• 4-level subroutine nesting (including interrupt).
• 4 event driven interrupts, 2 external and 2 internal.
• ROM size: 1024 x 15 bits.
• RAM size: 64 x 4 bits.
• Input ports: 2 ports/ 8 pins (S and M).
• Output port: 1 port/ 4 pins (P).
• Pseudo serial output port (P).
• Input/output ports: 2 ports/ 8 pins (I/OA and I/OB).
• Control outputs: ALARM, LIGHT.
• LCD driver outputs (can drive up to 75 LCD segments).
• Mask option to select 4 LCD drive modes: static, duplex (1/2 duty 1/2 bias, 1/3 duty 1/2 bias or 1/3 duty 1/3 bias).
• Mask option permits LCD driver output pins to be used for DC output ports; up to 25 pins are available.
• Segment PLA circuit permits any layout on LCD panel.
• Built-in clock generator (crystal or RC).
• Built-in voltage doubler, halver, tripler.