HD4074829 Datasheet | Renesas

HD404829R Series AS Microputer Incorporating a LCD controller/Driver Circuit ADE-202-057C Rev.4 Sept. 1999 Description The HD404829R series incorporates an 8-bit A/D converter (four channels), a Liquid Crystal Display (LCD) and a serial interface, and has large-current Input/Output (I/O) pins. The series is a 4-bit single-chip microputer best used in the AV equipment such as CD radio cassette tape recorders which require the LCD display control. The HD404829R Series, with a 32.768k Hz sub-oscillator for clocks, counts up the system clock and a variety of power modes can reduce power consumption. The HD4074829 is a ZTAT TM microputer which incorporates a PROM. System development period has been dramatically reduced so that the process from debugging to mass production is smooth. (The PROM programming specifications are the same as those for Type 27256.) ZTATTM: Zero Turn Around Time ZTAT is a trademark of Hitachi Ltd. Features - 1,876-digit × 4-bit RAM - 44 I/O pins, including 10 high-current pins (15 m A, max.) and 20 pins multiplexed with LCD segment pins - Four timer/counters - 8-bit input capture circuit - Three timer outputs (including two PWM out-puts) - Two event counter inputs (including one double-edge function) - Clock-synchronous 8-bit serial interface - A/D converter (4 channels × 8 bits) - LCD controller/driver (52 segments × 4 mons) - Built-in oscillators  Main clock: 4.2-MHz ceramic (an external clock is also possible)  Subclock: 32.768-k Hz crystal - Eleven interrupt sources  Five by external sources, including three double-edge functions HD404829R Series  Six by internal sources - Subroutine stack up to 16 levels, including interrupts - Four low-power dissipation modes  Subactive mode  Standby mode  Watch mode  Stop mode - One external input for transition from stop mode to active mode - Instruction cycle time (min.): 0.95 µs (f OSC = 4.2 MHz) - Operation...