HT47R20A-1 Datasheet, PDF (1/43 Pages) Holtek Semiconductor Inc – R-F Type 8-Bit MCU

HT47R20A-1/HT47C20-1
R-F Type 8-Bit MCU
Technical Document
· Tools Information
· FAQs
· Application Note
- HA0029E Using the Time Base Function in the HT47R20A-1
- HA0030E Using the RTC in the HT47R20A-1
- HA0034E Using the Buzzer Function in the HT47R20A-1
- HA0036E Using the PFD Function in the HT47R20A-1
- HA0045E Distinguishing between the Different Devices in the HT47 MCU Series
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
· 2K´16 program memory
· 64´8 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 or R type
· One LCD driver with 20´2, 20´3 or 19´4 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 1ms instruction cycle with 4MHz system clock
· All instructions in one or two machine cycles
· 63 powerful instructions
· _{64-pin QFP package}
General Description
The HT47R20A-1/HT47C20-1 are 8-bit, high perfor-
mance, RISC architecture microcontroller devices spe-
cifically 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 flexibil-
ity, 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 Resis-
tor to Frequency application possibilities such as sensor
signal processing, remote metering, industrial control,
consumer products, subsystem controllers, etc.
Rev. 1.70
1
June 14, 2005