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HT48RA3 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT48RA3 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
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1 / 36 page  HT48RA3 8-Bit Remote Type OTP MCU Block Diagram Rev. 1.20 1 May 12, 2003 General Description This device is an 8-bit high performance RISC-like MCU designed for multiple I/O product applications. The de- vice is particularly suitable for use in products such as universal remote controller (URC). A HALT feature is in- cluded to reduce power consumption. The data ROM can be used to store codes of remote control. Features · Operating voltage: 2.2V~3.6V · 23 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 (TMR0) · 16-bit programmable timer/event counter and over- flow interrupts (TMR1) · On-chip crystal and RC oscillator · Watchdog Timer · 24K´16 program memory EPROM (8K ´16 bits´3 banks) · 224´8 data memory RAM · PFD supported · HALT function and wake-up feature reduce power consumption · 8-level subroutine nesting · Up to 1ms instruction cycle with 4MHz system clock at VDD=3V · Bit manipulation instruction · 16-bit table read instruction · 63 powerful instructions · All instructions in one or two machine cycles · 28-pin SKDIP/SOP package I N T / P . 0 O S C 2 O S C 1 R E S V D D M U X T M R 0 T M R 0 C T M R 0 V S S P r e s c a l e r f S Y S P r o g r a m E P R O M P r o g r a m C o u n t e r I n t e r r u p t C i r c u i t S T A C K I N T C D A T A M e m o r y I n s t r u c t i o n R e g i s t e r M U X I n s t r u c t i o n D e c o d e r S T A T U S A L U S h i f t e r T i m i n g G e n e r a t o r A C C M U X M P W D T S W D T W D T O S C W D T P r e s c a l e r M U X E N / D I S P . C P . P O R T . P . 0 P B C P O R T B P B 0 ~ P B 7 P . D P B P A C P O R T A P A 0 ~ P A 7 P A P C P O R T C P C 0 ~ P C 5 P C C T M R 1 C T M R 1 M U X T M R 1 f S Y S / 4 B P f S Y S / 4 |
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Similar Description - HT48RA3 |
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