Rainbow Electronics DS1215 - Manual (Page 12)

DS1215
032697 12/15
TIMING DIAGRAM: POWER DOWN
ЗЗЗЗЗЗЗЗЗЗ
ЗЗЗЗЗЗЗЗЗЗ
ЗЗЗЗЗЗЗЗЗЗ
t CE
t PD
t
CE
t PF
V BAT - 0.2V
V IH
V IL
V IL
V IH
4.5V
3V
t F
CEI
CEO
CEO
V CCI
ROM/RAM = GND
ROM/RAM = V CCO
TIMING DIAGRAM: POWER UP
ЗЗЗЗЗЗ
ЗЗЗЗЗЗ
4.5V
V IH
V IL
BAT - 0.2V
t REC
t PD
V IL
CEI
CEO
CEO
V CCI
ROM/RAM = GND
ROM/RAM = V CCO
TIMING DIAGRAM: RESET FOR TIME CHIP
t RST RST