Holtek Semiconductor HT46F48E
the HT46F46E/HT46F48E devices and the HT46F49E 24/28SKDIP packages, although mentioned in this datasheet, have already been phased out and are presently no longer available. The usual Holtek MCU features such as power down and wake-up functions, oscillator options, programmable frequency divider, etc.FEATURES
● Operating voltage: fSYS=4MHz: 2.2V~5.5V fSYS=8MHz: 3.3V~5.5V fSYS=12MHz: 4.5V~5.5V● 13 to 23 bidirectional I/O lines
● External interrupt input shared with an I/O line
● 8-bit programmable Timer/Event Counter with over- flow interrupt and 7-stage prescaler
● On-chip crystal and RC oscillator
● Watchdog Timer function
● PFD for audio frequency generation
● Power down and wake-up functions to reduce power consumption
● Up to 0.5ms instruction cycle with 8MHz system clock at VDD=5V
● 4 or 6-level subroutine nesting
● 4 channels 8 or 9-bit resolution A/D converter
● 1 or 2 channel 8-bit PWM output shared with I/O lines
● Bit manipulation instruction
● Table read instructions
● 63 powerful instructions
● All instructions executed in one or two machine cycles
● Low voltage reset function
● Flash program memory can be re-programmed up to 10,000 times
● True EEPROM data memory can be re-programmed up to 100,000 times
● Flash program memory data retention > 10 years
● True EEPROM da...