4-BIT SINGLE-CHIP MICROCONTROLLER
DATA SHEET
µPD17072,17073
4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
MOS INTEGRATED CIR...
Description
DATA SHEET
µPD17072,17073
4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
MOS INTEGRATED CIRCUIT
DESCRIPTION
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.
FEATURES
17K architecture: general-purpose register system Program memory (ROM) 6 KB (3072 × 16 bits): µPD17072 8 KB (4096 × 16 bits): µPD17073 General-purpose data memory (RAM) 176 × 4 bits Instruction execution time 53.3 µs (with 75-kHz crystal resonator: normal operation) 106.6 µs (with 75-kHz crystal resonator: low-speed mode) Decimal operation Table referen...
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