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HT82D20R/HT82D20A -- 27MHz One Channel RX 8-Bit MCU (产品终止)
General Description
USB Encoder Built-in one 27MHz FSK receiver MCU OTP body is suitable for USB interface and 27MHz Wireless system. Flexible total solution for applications that combine PS/2 and low-speed USB interface and 27MHz wireless system, such as mice, joysticks, and many others.
It consists of a Holtek high performance 8-bit MCU core for control unit, built-in USB SIE, 27MHz FSK Receiver, 2Kx14 bits ROM and 96 bytes data RAM.
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Features
- USB specification compliance
-- Conforms to USB specification V2.0
-- Conforms to USB HID specification V1.11
- Supports 1 Low-speed USB control endpoint and
1 interrupt endpoint
- Each endpoint has 8 byte FIFO
- Integrated USB transceiver
- 3.3V regulator output
- Built-in one 27MHz FSK receiver
- PS2 and USB modes supported
- 27MHz FSK receiver power down function
- FSK receiver frequency range 26.945~27.295MHz
- FSK receiver high sensitivity: < -90 dBm
- RF tuner, mixer, transistors, passives, coils, and SAW filter functions integrated in the same device
- Integrated FSK Receiver Phase Locked Loop
- Eight user selectable frequencies
- Integrated FSK Receiver 6Kbps data rate
- Uses external 12MHz crystal
- 8-bit RISC microcontroller, with 2Kx14 bits EPROM (000H~7FFH)
- 96 bytes RAM (20H~7FH)
- 6MHz internal MCU clock
- 4-level stack
- Two 7-bit indirect addressing registers
- One 16-bit programmable timer counter with
overflow interrupt (shared with PA7, vector 0CH)
- One USB interrupt input (vector 04H)
- HALT function and wake-up feature reduce
power consumption
- PA0~PA7 support wake-up function
- Internal Power-On reset (POR)
- Watchdog Timer (WDT)
- 8 I/O ports
- 28-pin SSOP package
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