HT45F4MA
HT45F4MA is Power Bank 8-Bit Flash MCU manufactured by Holtek Semiconductor.
Power Bank Flash MCU
HT45F4MA/HT45FH4MA/HT45FH4MA-1
Revision: V1.40 Date: October 17, 2025
HT45F4MA/HT45FH4MA/HT45FH4MA-1 Power Bank Flash MCU
Note that the HT45FH4MA device, although mentioned in this datasheet, has already been phased out and is presently no longer available.
Features
CPU Features
- Operating Voltage
- f SYS = 7.5MHz: 2.55V~5.5V
- f SYS = 15MHz: 4.5V~5.5V
- Up to 0.27μs instruction cycle with 15MHz system clock at VDD= 5V
- Power down and wake-up functions to reduce power consumption
- Oscillators
- Internal RC -- HIRC
- Internal 32k Hz -- LIRC
- Fully intergrated internal 30MHz oscillator requires no external ponents
- Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
- All instructions executed in one or two instruction cycles
- Table read instructions
- 63 powerful instructions
- 4-level subroutine nesting
- Bit manipulation instruction
Peripheral Features
- Flash Program Memory: 2K×16
- RAM Data Memory: 128×8
- True EEPROM Memory: 64×8
- Watchdog Timer function
- Up to 16 bidirectional I/O lines
- Two pin-shared external interrupts
- Multiple Timer Module for time measure, input capture, pare match output, PWM output function or single pulse output...
