HT45F2440
TWS Earbud Charging Case Flash MCU
General Information
The device is a Flash Memory type 8-bit high performance RISC architecture microcontroller.
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. By using the In Application Programming technology, users have a convenient means to directly store their measured data in the Flash Program Memory as well as having the ability to easily update their application programs.
Analog features include a multi-channel 12-bit A/D converter. Multiple and extremely flexible Timer Modules provide timing, pulse generation and PWM output functions. Communication with the outside world is catered for by including fully integrated SPI, I2C and UART interface functions, three popular interfaces which provide designers with a means of easy communication with external peripheral hardware. Protective features such as an internal Watchdog Timer, Low Voltage Reset and Low Voltage Detector coupled with excellent noise immunity and ESD protection ensure that reliable operation is maintained in hostile electrical environments.
A full choice of external and internal low and high oscillator functions are provided including fully integrated system oscillators which require no external components for their 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 also includes an input over voltage protection, a linear charger function, a synchronous boost circuit, a power path management and communication function. These functions meet the requirements of single Li-battery charging and discharging management applications, which are very suitable for small size Li-battery portable products, such as TWS earbud charging cases.
The inclusion of flexible I/O programming features, Time Base functions along with many other features ensure that the device will find excellent use in TWS earbud charging cases or the products which utilise an integrated Li-battery and require the voltage to be boosted to a 5V output.
CPU Features
| Attribute | Value |
|---|---|
| Operating Voltage |
|
| Up to 0.25μs instruction cycle with 16MHz system clock at VDD =5V | Available |
| Power down and wake-up functions to reduce power consumption | Available |
| Oscillator types |
|
| 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 | 4K×16 |
| RAM Data Memory | 256×8 |
| True EEPROM Memory | 128×8 |
| Watchdog Timer function | Available |
| In Application Programming – IAP | Available |
| 17 bidirectional I/O lines | Available |
| Two external interrupt lines shared with I/O pins | Available |
| Programmable I/O port source current for LED applications | Available |
| Multiple Timer Modules for time measure, compare match output, PWM output function or single pulse output function | Available |
| Serial Interfaces Module – SIM for SPI or I2C communication | Available |
| Fully-duplex/half-duplex Universal Asynchronous Receiver and Transmitter Interface – UART | Available |
| Software controlled LCD driver with 1/3 bias, 17-SCOM/SSEG lines | Available |
| 6 external channel 12-bit resolution A/D converter with Programmable Internal Reference Voltage VVR | Available |
| Dual Time Base functions for generation of fixed time interrupt signals | Available |
| Input maximum rating 24V, integrated input under voltage protection and input over voltage protection | Available |
| Integrated linear battery charger with a charging current up to 1A | Available |
| Integrated TinyPowerTM synchronous boost converter, with 5μA standby current | Available |
| Power path management used for the AM modulation or UART communication of the earbuds | Available |
| Low Voltage Reset function | Available |
| Low Voltage Detect function | Available |
| Package type | 32-pin QFN |
Resources
| Title | Date | File Size | Language | Download |
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