µPD17072 and 17073 are low-voltage 4-bit single-chip CMOS microcontrollers containing hardware ideal for organizing a digital tuning system. The CPU employs 17K architecture and can manipulate the data memory directly, perform arithmetic operations, and control peripheral hardware with a single instruction. All the instructions are 16-bit one-word instructions. As peripheral hardware, a prescaler that can operate at up to 230 MHz for a digital tuning system, a PLL frequency synthesizer, and an intermediate frequency (IF) counter are integrated in addition to I/O ports, an LCD controller/driver, A/D converter, and BEEP. Therefore, a high-performance, multi-function digital tuning system can be configured with a single chip of µPD17072 or 17073. Because the µPD17072 and 17073 can operate at low voltage (VDD = 1.8 to 3.6 V), they are ideal for controlling battery-cell driven portable devices such as portable radio equipment, headphone stereos, or radio cassette recorders.
This document is a datasheet for the NEC uPD17072 and uPD17073, which are low-voltage 4-bit single-chip CMOS microcontrollers. These devices contain hardware specifically ideal for organizing digital tuning systems, including a PLL frequency synthesizer, intermediate frequency (IF) counter, and LCD controller/driver.
| Program memory (ROM) | 6 KB (uPD17072), 8 KB (uPD17073) |
|---|---|
| General-purpose data memory (RAM) | 176 x 4 bits |
| Supply voltage | 1.8 to 3.6 V |
| Instruction execution time (normal) | 53.3 us |
| Instruction execution time (low-speed) | 106.6 us |
| Prescaler max frequency | 230 MHz |
They are ideal for controlling battery-cell driven portable devices such as portable radio equipment, headphone stereos, or radio cassette recorders.
The CPU employs 17K architecture.