SMALL/ GENERAL-PURPOSE 4Bit SINGLE-CHIP MICROCONTROLLERS
The µPD17145A1, 17147A1, and 17149A1 are 4-bit single-chip microcontrollers integrating an 8-bit A/D converter 4 channels, a timer function 3 channels, and a serial interface.
These microcontrollers employ a CPU of the general-purpose register type that can execute direct memory operations and direct memory-to-memory data transfer for efficient programming. All the instructions consist of 16 bits per word.
**FEATURES**
• 17K architecture : General-purpose register type
: Instruction length fixed to 16 bits
• Program memory ROM : µPD17145A1 : 2 KB 1024 × 16 bits
: µPD17147A1 : 4 KB 2048 × 16 bits
: µPD17149A1 : 8 KB 4096 × 16 bits
• Data memory RAM : 110 × 4 bits
• External interrupt : 1 INT pin, with sense input
• Instruction execution time : 2 µs at 8 MHz: ceramic oscillation
• 8-bit A/D converter : 4 channels, absolute accuracy: ±1.5 LSB MAX. VDD = 4.0 to 5.5 V
• Timer : 3 channels
• Serial interface : 1 channel clocked 3-wire
• POC circuit mask option
• Operating voltage : VDD = 2.7 to 5.5 V at 400 kHz to 2 MHz
: VDD = 4.5 to 5.5 V at 400 kHz to 8 MHz
• Operating temperature : Ta = –40 to +110 ˚C
**APPLICATIONS**
Automotive electronics, etc.