UPD17705 Datasheet | NEC

DATA SHEET MOS INTEGRATED CIRCUIT µ PD17704, 17705, 17707, 17708, 17709 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM The µ PD17704, 17705, 17707, 17708, and 17709 are 4-bit single-chip CMOS microcontrollers containing hardware for digital tuning systems. Provided with a wealth of hardware, these microcontrollers are available in many variations of ROM and RAM capacities to support various applications. Therefore, a high-performance, multi-function digital tuning system can be configured with only one chip. In addition, a one-time PROM model, µ PD17P709, which can be written only once and therefore is ideal for program evaluation and small-scale production of a µ PD17704, 17705, 17707, 17708, or 17709 system, is also available. Features µ PD17704 Program memory (ROM) 16K bytes (8192 × 16 bits) 672 × 4 bits µ PD17705 24K bytes (12288 × 16 bits) µ PD17707 µ PD17708 32K bytes (16384 × 16 bits) µ PD17709 General Purpose data memory (RAM) 1120 × 4 bits 1776 × 4 bits - Instruction execution time 1.78 µ s (with f X = 4.5-MHz crystal oscillator) - PLL frequency synthesizer Dual modulus prescaler (130 MHz MAX.), programmable divider, phase parator, charge pump - Abundant peripheral hardware units General-purpose I/O ports, serial interfaces, A/D converter, D/A converter (PWM output), BEEP output, frequency counter - Many interrupts External Internal : 6 sources : 6 sources - Power-ON reset, CE reset, and power failure detection circuit - Supply voltage: V DD = 5 V ± 10 % Unless otherwise specified, the µ PD17709 is treated as the representative model in this document. The information in this document is subject to change without notice. Document No. U11624EJ2V0DS00 (2nd edition) Date Published December 1996 N Printed in Japan The mark shows major revised points. © µPD17704, 17705, 17707, 17708, 17709 ORDERING INFORMATION Part Number Package 80-pin plastic QFP (14 × 14 mm, 0.65 mm pitch) 80-pin plastic QFP...