HT48R502 Datasheet | Holtek Semiconductor

Features - Operating voltage: - 224´8 data memory RAM - Buzzer driving pair and PFD supported - HALT function and wake-up feature reduce power f SYS=4MHz: 2.2V~5.5V f SYS=8MHz: 3.3V~5.5V - Low voltage reset function - 56 bidirectional I/O lines (max.) - 1 interrupt input - 2´16-bit programmable timer/event counter and consumption - 16-level subroutine nesting - Up to 0.5ms instruction cycle with 8MHz system clock at VDD=5V - Bit manipulation instruction - 15-bit table read instruction - 63 powerful instructions - All instructions in one or two machine cycles - 48-pin SSOP, 64-pin QFP package overflow interrupts - On-chip RC oscillator, external crystal and RC oscil- lator - 32768Hz crystal oscillator for timing purposes only - Watchdog Timer - 4096´15 program memory ROM General Description The HT48R502 is an 8-bit high performance, RISC architecture microcontroller devices specifically designed for multiple I/O control product applications. The advantages of low power consumption, I/O flexibility, 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 controllers, etc. Rev. 1.00 September 27, 2006 .. Block Diagram T M R 1 C IN T T M R 1 L T M R 1 H M U X M U X f S T M R 1 /4 In te rru p t C ir c u it S T A C K P ro g ra m R O M P ro g ra m C o u n te r IN T C T M R 0 C T M R 0 L T M R 0 H M U X E N /D IS M U X f S /4 T M R 0 In s tr u c tio n R e g is te r W D T S M P M U X D A T A M e m o ry W D T P r e s c a le r W D T M U X f...