HT45R35 Datasheet | Holtek Semiconductor

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 VDD=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/SSOP and 32-pin QFN packages General Description The HT45R35 is an 8-bit high performance, RISC architecture microcontroller device specifically designed for cost-effective multiple I/O control product applications. The advantages of low power consumption, I/O flexibility, timer functions, oscillator options, Power Down and wake-up functions, Watchdog Timer, enhance the versatility of these devices to suit a wide range of application possibilities such as industrial control, consumer products, subsystem controllers, etc. Rev. 1.30 May 14, 2010 Block Diagram P ro g ra m ROM P ro g ra m C o u n te r P A 0 /IN T 0 /R C 1 P A 1 /IN T 1 /R C 2 STAC K0 STAC K1 In te rru p t C ir c u it IN T C In s tr u c tio n R e g is te r D a ta M e m o...