HT47C20L_05 Datasheet, PDF (1/45 Pages) Holtek Semiconductor Inc – R-F Type Low Voltage 8-Bit Mask MCU

HT47C20L
R-F Type Low Voltage 8-Bit Mask 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: 1.2V~2.2V
· 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 32768Hz crystal oscillator
· Watchdog Timer
· 2K´16 program memory ROM
· 64´8 data memory RAM
· One real time clock (RTC)
· One 8-bit prescaler for real time clock
· One buzzer output
· _{One low voltage detector}
· One low voltage reset circuit
· HALT function and wake-up feature reduce power
consumption
· LCD bias C type
· One LCD driver with 20´2 or 20´3 or 19´4 segments
· Two channels RC type A/D converter
· Four-level subroutine nesting
· Bit manipulation instruction
· 16-bit table read instruction
· Up to 122ms instruction cycle with 32768Hz system
clock
· All instructions in one or two machine cycles
· 63 powerful instructions
· _{64-pin QFP package}
General Description
The HT47C20L is an 8-bit high performance RISC-like
microcontroller. Its single cycle instruction and
two-stage pipeline architecture make high speed appli-
cations. The device is suited for use in multiple LCD low
power applications among which are calculators, clock
timers, games, scales, toys, thermometers, hygrome-
ters, body thermometers, capacitor scaler, other hand
held LCD products, and battery system in particular.
Rev. 2.30
1
December 2, 2005