General Description
●The HT46R22/HT46C22 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 mask version HT46C22 is fully pin and functionally compatible with the OTP version HT46R22 device.
●Features
●Operating voltage:
● fSYS=4MHz: 2.2V~5.5V
● fSYS=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 overflow interrupt and 7-stage prescaler
●On-chip crystal and RC oscillator
●Watchdog Timer
●204814 program memory
●648 data memory RAM
●Supports PFD for sound generation
●HALT function and wake-up feature reduce power consumption
●Up to 0.5s instruction cycle with 8MHz system clock at VDD=5V
●6-level subroutine nesting
●8 channels 9-bit resolution (8-bit accuracy) A/D converter
●1-channel (6+2)/(7+1)-bit PWM output shared with one I/O line
●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 package
