Holtek Semiconductor HT82K74E
the HT82K74E MCU, the other is a 128´8 bits EEPROM used for data memory purpose. The two dice are wire-bonded to form HT82K74EE Block Diagram S ta c k E E P R O M D a ta M e m o ry O T P P ro g ra m M e m o ry R A M D a ta M e m o ry R e s e t C ir c u it 8 - b it R IS C C o re W a tc h d o g T im e r O s c illa to r W a tc h d o g T im e r V o lta g e D e te c to r D C /D C I/O P o rts 1 6 - b it T im e r P o w e r A m p lifie r C ry s ta l O s c illa to r In te rru p t C o n tr o lle r Rev.| Part No. | HT82K74E |
|---|---|
| Datasheet | HT82K74E Download |
| Manufacturer |  Holtek Semiconductor |
| Description | 27MHz Keyboard/ Mouse TX 8-Bit MCU |
| Buy | Stock & Price |
FEATURES
● Operating voltage:● 128´8 bits data EEPROM for HT82K74EE
● One external crystal (27MHz) to supply fSYS= 27MHz: 3.0V~3.3V for crystal mode
● Program Memory: 2K´15 bits
● Data Memory: 96´8 bits
● 36 bidirectional I/O lines, with pull-high options
● Watchdog Timer function
● Single 16-bit internal timer with overflow interrupt microcontroller system clock
● 63 powerful instructions
● All instructions executed in one or two machine cycles
● Low voltage reset function
● Crystal oscillator which built-in capacitor value can and timer input
● Power down and wake-up functions to reduce configure by firmwave OSCC register
● Two bit to define microcontroller system clock power consumption
● 4-level subroutine nesting
● Bit manipulation instruction
● Table read instructions
● Built-in DC/DC to provide stable (2.8V, 3.0V, 3.3V (fSYS/1, fSYS/4, fSYS/8, fSYS/16)
● HT82K74E: 28-pin SSOP, 32-pin QFN and 48-pin SSOP/LQFP packages
● HT82K74EE: use configuration option) DC_DC 3.0V with error...
