V3021SO8A EMMICRO [EM Microelectronic - MARIN SA], V3021SO8A Datasheet - Page 13

• Manufacturer Part Number: V3021SO8A
• Description: Ultra Low Power 1-Bit 32 kHz RTC
• Manufacturer: EMMICRO [EM Microelectronic - MARIN SA]

Typical Applications
V3021 Interfaced with Intel CPU (RD/WR Pulse)
V3021 Interfaced with Motorola CPU (Advanced R/W)
3 Wire Serial Interface
Copyright © 2005, EM Microelectronic-Marin SA
1)
2)
R
With strobe low bits are written to the V3021, and with strobe high bits are read from the
V3021
For serial ports with byte transfer only, an address command cycle should be combined with
every data cycle to give 8 address bits and 8 data bits. For example to read the current
minutes, write address data F + 3 (1111 + 0011) and then read 8 data bits.
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V3021
Fig. 13
Fig. 14
Fig. 15