HT46R51A

HT46R51A/HT46R52A A/D Type 8-Bit OTP MCU Features · Low-power fully static CMOS design · Operating voltage: fSYS=4MHz: 2.2V~5.5V fSYS=8MHz: 3.3V~5.5V · Program Memory: 1K´15 OTP (HT46R51A) 2K´15 OTP (HT46R52A) · Data memory: 96´8 RAM (HT46R51A) 128´8 RAM (HT46R52A) · A/D converter: 12bits´5Ch External A/D converter reference voltage input pin · 14 bidirectional I/O lines · 1 interrupt input shared with an I/O line · 8-bit programmable timer/event counter with over- flow interrupt and 8-stage prescaler · On-chip crystal and RC oscillator · 6-level subroutine nesting · Watchdog Timer · Low voltage reset function · HALT function · Up to 0.5ms instruction cycle with 8MHz system clock at VDD=5V · 1-channel 8-bit PWM output shared with an I/O line · PFD function · Bit manipulation instruction · Table read instruction · 63 powerful instructions · All instructions in one or two machine cycles · 16-pin NSOP, 18-pin DIP, 20-pin SOP/SSOP package General Description The HT46R51A/HT46R52A 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, timer functions, oscillator options, multi-channel A/D con- verter, Pulse Width Modulation function, HALT and wake-up functions, watchdog timer, as well as low cost, enhance the versatility of these devices to suit a wide range of A/D application possibilities su...