HT45R35 Datasheet, PDF (1/54 Pages) Holtek Semiconductor Inc – C/R to F Type 8-Bit OTP MCU

HT45R35
C/R to F Type 8-Bit OTP MCU
Features
· Operating voltage:
f_SYS=4MHz: 2.2V~5.5V
f_SYS=8MHz: 3.3V~5.5V
· 16 bidirectional I/O lines
· Two external interrupt inputs shared with I/O lines
· 8-bit programmable timer/event counter with
overflow interrupt and 7-stage prescaler
· External RC oscillation converter
· On-chip crystal and RC oscillator
· Watchdog Timer
· 12 capacitor/resistor sensor input
· 2048´14 program memory
· 120´8 data memory RAM
· Power Down and Wake-up function reduce power
consumption
· Up to 0.5ms instruction cycle with 8MHz system clock
at V_DD=5V
· All instructions executed in one or two machine
cycles
· 14-bit table read instruction
· Four-level subroutine nesting
· Bit manipulation instruction
· 63 powerful instructions
· Low voltage reset function
· 16-pin DIP/NSOP, 20-pin DIP/SOP,
24/28-pin SKDIP/SOP, 28-pin SSOP and
32-pin QFN packages
General Description
The HT45R35 is an 8-bit high performance, RISC archi-
tecture microcontroller device specifically designed for
cost-effective multiple I/O control product applications.
The advantages of low power consumption, I/O flexibil-
ity, timer functions, oscillator options, Power Down and
wake-up functions, Watchdog Timer, enhance the ver-
satility of these devices to suit a wide range of applica-
tion possibilities such as industrial control, consumer
products, subsystem controllers, etc.
Rev. 1.20
1
January 29, 2010