HT48R54A Datasheet, PDF (1/40 Pages) Holtek Semiconductor Inc – I/O Type 8-Bit OTP MCU with 16x16 High Current LED Driver

HT48R54A
I/O Type 8-Bit OTP MCU with 16´16 High Current LED Driver
Technical Document
· Tools Information
· FAQs
· Application Note
- HA0002E Reading Larger than Usual MCU Tables
- HA0007E Using the MCU Look Up Table Instructions
- HA0019E Using the Watchdog Timer in the HT48 MCU Series
- HA0020E Using the Timer/Event Counter in the HT48 MCU Series
- HA0075E MCU Reset and Oscillator Circuits Application Note
Features
· Operating voltage:
f_SYS=32768Hz: 2.2V~5.5V
f_SYS=4MHz: 2.2V~5.5V
f_SYS=8MHz: 3.3V~5.5V
· 4k´15 program memory ROM
· 192´8 data memory RAM
· 16 bidirectional I/O lines
· 24 output lines
· One external interrupt input
· Two internal interrupt
· Two 8 bit programmable timer/event counter
· 32768 Real Time Clock function
· 6-level subroutine nesting
· _{Watchdog Timer (WDT)}
· _{Low voltage reset (LVR)}
· _{PFD/Buzzer driver output}
· RC/XTAL and 32768Hz crystal oscillator
· Dual clock system offers three operating modes
- Normal mode: Both RC/XTAL and 32768Hz clock
active
- Slow mode: 32768Hz clock only
- Idle mode: Periodical wake-up by watchdog timer
overflow
· HALT function and wake-up feature reduce power
consumption
· 15-bit table read instructions
· 63 powerful instructions
· One instruction cycle: 4 system clock periods
· All instructions in 1 or 2 instruction cycles
· Bit manipulation instructions
· _{Up to 0.5ms instruction cycle with 8MHz system clock}
· _{44/52-pin QFP package}
General Description
This device is an 8-bit high performance, RISC architec-
ture microcontroller specifically designed for multiple
I/O control product applications. The advantages of low
power consumption, I/O flexibility, timer functions, oscil-
lator options, HALT and wake-up functions, watchdog
timer, as well as low cost, enhance the versatility of
these devices to suit a wide range of application possi-
bilities such as industrial control, consumer products,
subsystem controllers, etc.
Rev. 1.00
1
July 27, 2007