HT46RU22 Datasheet | Holtek Semiconductor

Features - Operating voltage: - Up to 0.5ms instruction cycle with 8MHz system clock f SYS=4MHz: 2.2V~5.5V f SYS=8MHz: 3.3V~5.5V - 19 bidirectional I/O lines (max.) - 1 interrupt input shared with an I/O line - 8-bit programmable timer/event counter with at VDD=5V - 6-level subroutine nesting - 8 channels 9-bit resolution A/D converter - 1-channel 8-bit PWM output shared with one I/O line - Universal Asynchronous Receiver Transmitter overflow interrupt and 7-stage prescaler - On-chip crystal and RC oscillator - Watchdog Timer - 2048´14 program memory - 64´8 data memory RAM - Supports PFD for sound generation - HALT function and wake-up feature reduce power (UART) - Bit manipulation instruction - 14-bit table read instruction - 63 powerful instructions - All instructions in one or two machine cycles - Low voltage reset function - I2C Bus (slave mode) - 24-pin SKDIP/SOP/SSOP package consumption General Description The HT46RU22 are 8-bit, high performance, RISC architecture microcontroller devices specifically designed for A/D applications that interface directly to analog signals, such as those from sensors. The advantages of low power consumption, I/O flexibility, programmable frequency divider, timer functions, oscillator options, multi-channel A/D Converter, Pulse Width Modulation function, UART function, I2C interface, HALT and wake-up functions, enhance the versatility of these devices to suit a wide range of A/D application possibilities such as sensor signal processing, motor driving, industrial control, consumer products, subsystem controllers, etc. I2C is a trademark of Philips Semiconductors Rev. 1.00 July 13, 2006 .. Block Diagram P A 5 /IN T 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 C T M R P A 3 /P F D P r e s c a le r X P A 4 /T M R f S P A 4 f...