Holtek Semiconductor HT56R668
the HT56C668 and HT56C678, are also available for volume production products. The following table summarises the main features of each device.FEATURES
● Operating voltage:● Dual Serial Interfaces: SPI and I2C
● LCD and LED driver function
● 4 operating modes: normal, slow, idle and sleep
● 8-channel 12-bit resolution A/D converter
● 4-channel 12-bit PWM outputs
● Low voltage reset function: 2.1V, 3.15V, 4.2V
● Low voltage detect function: 2.2V, 3.3V, 4.4V
● Bit manipulation instruction
● Table read instructions
● 63 powerful instructions
● Up to 0.33ms instruction cycle with 12MHz system fSYS=100kHz: 2.2V~5.5V fSYS=4MHz: 2.2V~5.5V fSYS=8MHz: 3.0V~5.5V fSYS=12MHz: 4.5V~5.5V
● Operating current: fSYS=1MHz at 3V, 170mA, typ.
● OTP Program Memory: 16K´16 ~ 48K´16
● RAM Data Memory: 2304´8
● 24 to 32 bidirectional I/O lines
● TinyPower technology for low power operation
● Three pin-shared external interrupts lines
● Multiple programmable Timer/Event Counters clock at VDD=5V
● Multiple level subroutine nesting
● All instructions executed in one or two machine with overflow interrupt and 7-stage prescaler
● External Crystal, RC an...