M34282M2-XXXGP General Description
The 4282 Group enables fabrication of 8 × 7 key matrix and has the followin timers;
• an 8-bit timer which can be used to set each carrier wave and has two reload register
• an 8-bit timer which can be used to auto-control and has a reload register.
M34282M2-XXXGP Maximum Ratings
M34282M2-XXXGP Features
• Number of basic instructions ................................................................ 68
• Minimum instruction execution time ................................................ 8.0 s
(at f(XIN) = 4.0 MHz, system clock = f(XIN)/8)
• Supply voltage .....................................................................1.8 V to 3.6 V
• Subroutine nesting ..................................................... ..................4 levels
• Timer
Timer 1 ...................................................................................... 8-bit timer
(This has a reload register and carrier wave output auto-control function)
Timer 2 ...................................................................................... 8-bit timer
(This has two reload registers and carrier wave output function)
• Logic operation function (XOR, OR, AND)
• RAM back-up function
• Key-on wakeup function (ports D4D7, E0E2, G0G3) ......................11
• I/O port (ports D, E, G, CARR) .................................................................16
• Oscillation circuit ...........................................................Ceramic resonance
• Watchdog timer
• Power-on reset circuit
• Voltage drop detection circuit ....................... Typical:1.50 V (system reset)
M34282M2-XXXGP Typical Application
Various remote control transmitters
M34282M2-XXXGP Connection Diagram
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