UPD75068

DATA SHEET µPD75064, 75066, 75068, 75064(A), 75066(A), 75068(A) 4-BIT SINGLE-CHIP MICROCOMPUTER MOS INTEGRATED CIRCUIT The µPD75068 is a member of the 75X series of 4-bit single-chip microcomputers. The minimum instruction execution time of the µPD75068's CPU is 0.95 µs. In addition to this high-speed capability, the chip contains an A /D converter and furnishes high-performance functions such as the serial bus interface (SBI) function compliant with the NEC standard format, providing powerful features and high cost performance. The µ PD75068(A) is a high-reliability version of the µPD75068. NEC also provides PROM versions suitable for small-scale production or evaluation samples in system development. The µPD75P068 is the PROM version for the µPD75064, 75066, 75068, and the µPD75P068(A) is that for the µPD75064(A), 75066(A), 75068(A). The detailed function descriptions are described in the document below. Please make sure to read this document before starting design. µPD75068 User's Manual: IEU-1366 FEATURES Variable instruction execution time advantageous to high-speed operation and power-saving: 0.95 µs, 1.91 µs, or 15.3 µs (at 4.19 MHz with the main system clock selected) 122 µ s (at 32.768 kHz with the subsystem clock selected) Capable of low-voltage operation: VDD = 2.7 to 6.0 V A /D converter (8-bit resolution, successive approximation): 8 channels Timer function: 3 channels On-chip NEC standard serial bus interface (SBI) Very low-power watch ...