HT46R47

The Holtek HT46R47 is a cost-effective, 8-bit OTP (One-Time Programmable) microcontroller featuring a high-performance RISC architecture. It is specifically designed for applications requiring direct interface with analog signals, such as sensor processing. The device offers low power consumption, flexible I/O capabilities, and a range of integrated peripherals.

Key electrical specifications include an operating voltage range of 2.2V to 5.5V, with different ranges depending on the system clock frequency (2.2V-5.5V for 4MHz, 3.3V-5.5V for 8MHz). It provides up to 13 bidirectional I/O lines, an 8-bit programmable timer/event counter, and a watchdog timer. For analog interfacing, it includes a 4-channel, 9-bit resolution A/D converter and an 8-bit PWM output.

The microcontroller supports on-chip crystal and RC oscillators, a HALT function for power saving, and up to 0.5µs instruction cycle time with an 8MHz system clock. It comes in an 18-pin DIP/SOP package, suitable for various embedded control applications like motor driving, industrial control, and consumer products.

The HT46R47 is pin and functionally compatible with its mask version, the HT46C47. Its design emphasizes versatility for a wide range of A/D application possibilities.