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HT47R20A-1/HT47C20-1 --
R-F Type
8-Bit MCU
General Description
The HT47R20A-1/HT47C20-1 are 8-bit, high performance, RISC architecture microcontroller devices specifically designed for applications that interface directly to analog signals, such as those from sensors. The mask version HT47C20-1 is fully pin and functionally compatible with the OTP version HT47R20A-1 device.
The advantages of low power consumption, I/O flexibility, programmable frequency divider, timer functions, oscillator options, 2-channel RC type A/D Converter, LCD driver, HALT and wake-up functions, enhance the versatility of these devices to suit a wide range of Resistor to Frequency application possibilities such as sensor signal processing, remote metering, industrial control, consumer products, subsystem controllers, etc.
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Features
- Operating voltage: 2.2V~5.5V
- Eight bidirectional I/O lines
- Four input lines
- One interrupt input
- One 16-bit programmable timer/event
counter with PFD (programmable frequency divider) function
- On-chip crystal and RC oscillator for system clock
- One 32.768kHz crystal oscillator for real time clock or system clock
- Watchdog Timer
- 2Kx16 program memory
- 64x8 data memory RAM
- One Real Time Clock (RTC)
- One 8-bit prescaler for RTC
- One low voltage detector
- One low voltage reset circuit
- One buzzer output
- HALT function and wake-up feature reduce power consumption
- LCD bias C type and R type
- One LCD driver with 20x2, 20x3 or 19x4 segments
- One IR carrier output
- Two channels RC type A/D converter
- Four-level subroutine nesting
- Bit manipulation instruction
- 16-bit table read instruction
- Up to 1us instruction cycle with 4MHz system clock
- All instructions in one or two machine cycles
- 63 powerful instructions
- 64-pin LQFP package
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