SMALL, GENERAL-PURPOSE
4-BIT SINGLE-CHIP MICROCONTROLLERS

The µPD17145(A1), 17147(A1), and 17149(A1) 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.
In addition, a one-time PROM version, the µPD17P149, is also available for program evaluation.

FEATURES
• 17K architecture : General-purpose register type
: Instruction length fixed to 16 bits
• Program memory (ROM) : µPD17145(A1) : 2 KB (1024 ×16 bits)
   : µPD17147(A1) : 4 KB (2048 ×16 bits)
   : µPD17149(A1) : 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.