HT48E50 Datasheet, PDF (1/46 Pages) Holtek Semiconductor Inc – I/O Type 8-Bit MTP MCU With EEPROM

Preliminary
HT48E50
I/O Type 8-Bit MTP MCU With EEPROM
Features
· Operating voltage:
f_SYS=4MHz: 2.2V~5.5V
f_SYS=8MHz: 3.3V~5.5V
· Low voltage reset function
· 33 bidirectional I/O lines (max.)
· 1 interrupt input shared with an I/O line
· 8-bit programmable timer/event counter with overflow
interrupt and 8-stage prescaler
· On-chip crystal and RC oscillator
· Watchdog Timer
· 4096´15 program memory ROM (MTP)
· 256´8 data memory EEPROM
· 160´8 data memory RAM
· HALT function and wake-up feature reduce power
consumption
· 6-level subroutine nesting
· Up to 0.5ms instruction cycle with 8MHz system clock
at V_DD=5V
· Bit manipulation instruction
· 15-bit table read instruction
· 63 powerful instructions
· 10⁶ erase/write cycles EEPROM data memory
· EEPROM data retention > 10 years
· All instructions in one or two machine cycles
· In system programming (ISP)
· 28-pin SKDIP/SOP, 48-pin SSOP package
General Description
The HT48E50 is an 8-bit high performance, RISC archi-
tecture microcontroller device specifically designed for
multiple I/O control product applications.
The advantages of low power consumption, I/O flexibil-
ity, timer functions, oscillator options, HALT and
wake-up functions, watchdog timer, buzzer driver, as
well as low cost, enhance the versatility of these devices
to suit a wide range of application possibilities such as
industrial control, consumer products, subsystem con-
trollers, etc.
Rev. 0.00
1
September 29, 2004