HT45F7550
Power Inverter Flash MCU
General Information
The device is a Flash Memory A/D type 8-bit high performance RISC architecture microcontroller designed for sine wave inverter applications.
For memory features, the Flash Memory offers users the convenience of multi-programming features. Other memory includes an area of RAM Data Memory as well as an area of true EEPROM memory for storage of non-volatile data such as serial numbers, calibration data etc.
Analog feature includes a multi-channel 12-bit A/D converter, an Over Current Protection function, an Over/Under Voltage Protection function, an Independent Over Voltage Protection function and an AC zero-cross detector. With regard to internal timers, the device includes multiple and extremely flexible Timer Modules providing functions for timing, pulse generation and PWM output operations. Communication with the outside world is catered for by including a fully integrated UART interface, which provides designers with a means of easy communication with external peripheral hardware. Protective features such as an internal Watchdog Timer, Low Voltage Reset coupled with excellent noise immunity and ESD protection ensure that reliable operation is maintained in hostile electrical environments.
A full choice of external high, internal high and low speed oscillators are provided including fully integrated system oscillators which require no external components for its implementation. The ability to operate and switch dynamically between a range of operating modes using different clock sources gives users the ability to optimise microcontroller operation and minimise power consumption.
The device includes a sine wave PWM generator with Delay Lock Loop and Dead Time functions. The transitions of the complementary output pairs, generated by the sine wave PWM generator, will result in a different current direction passing through the external MOSFETs to generate the sine wave signal. The inclusion of flexible I/O programming features, 16-bit MDU, 16-bit CRC, Time Base functions and many other features further enhance device functionality and flexibility. The device will find excellent use in a huge range of sine wave inverter applications.
CPU Features
| Attribute | Value |
|---|---|
| Operating voltage | - fSYS =20MHz: VDD =4.5V~5.5V |
| Up to 0.2μs instruction cycle with 20MHz system clock at VDD =5V | Available |
| Power down and wake-up functions to reduce power consumption | Available |
| Oscillator types |
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| Multi-mode operation | FAST, SLOW, IDLE and SLEEP |
| Fully integrated internal oscillators require no external components | Available |
| All instructions executed in 1~3 instruction cycles | Available |
| Table read instructions | Available |
| 115 powerful instructions | Available |
| 8-level subroutine nesting | Available |
| Bit manipulation instruction | Available |
Peripheral Features
| Attribute | Value |
|---|---|
| Flash Program Memory | 8K×16 |
| Data Memory | 512×8 |
| True EEPROM Memory | 512×8 |
| In Application Programming function – IAP | Available |
| On-Chip Debug Support function – OCDS | Available |
| Watchdog Timer function | Available |
| Up to 22 bidirectional I/O lines | Available |
| Single external interrupt line shared with I/O pin | Available |
| Multiple Timer Modules for time measurement, input capture, compare match output, PWM | output or single pulse output function |
| Dual Time Base functions for generation of fixed time interrupt signals | Available |
| One UART Interface for Fully-duplex / Half-duplex asynchronous communication | Available |
| 7 external channel 12-bit resolution A/D converter with internal reference voltage VVR | Available |
| Two Over Current Protection functions – OCP0 & OCP1 | Available |
| One Over/Under Voltage Protection function – OUVP | Available |
| One Independent Over Volage Protection function – IOVP | Available |
| AC zero-cross detector function | Available |
| Sine Wave PWM Generator with Delay Lock Loop and Dead Time functions | Available |
| Integrated 16-bit Multiplier/Divider Unit – MDU | Available |
| Integrated 16-bit Cyclic Redundancy Check function – CRC | Available |
| Low voltage reset function | Available |
| Package types | 24/28-pin SSOP |
Resources
| Title | Date | File Size | Language | Download |
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