V3023 EMMICRO [EM Microelectronic - MARIN SA], V3023 Datasheet - Page 4

• Manufacturer Part Number: V3023
• Description: Very Low Power 8-Bit 32 kHz RTC Module with Digital Trimming, User RAM and High Level Integration
• Manufacturer: EMMICRO [EM Microelectronic - MARIN SA]

Timing Characteristics (standard temperature range)
V
Note 1 : t
Note 2 : t
Note 3 : t
Note 4 : t
Note 5 : A /D must come before a CS and RD or a CS and WR combination. The user has to guarantee this.
Timing Waveforms
Read Timing for Intel ( RD and WR Pulse) and Motorola ( DS or RD pin tied to CS and R/ W )
Copyright © 2004, EM Microelectronic-Marin SA
DD
Parameter
Chip select duration, write cycle
Write pulse duration
Time between two transfers
RAM access time (note 1)
Data valid to Hi-impedance (note 2)
Write data settle time (note 3)
Data hold time (note 4)
Advance write time
Rise time (all timing waveform
signals)
Fall time (all timing waveform
signals)
PF response delay
CS delay after A /D (note 5)
CS delay to A /D
= 5.0 ±10%, V
Typically, t
ACC
DF
DW
DH
starts from RD ( DS ) or CS , whichever deactivates first
starts from WR (R/ W ) or CS , whichever deactivates first
ends at WR (R/ W ) or CS , whichever deactivates first
starts from RD ( DS ) or CS , whichever activates last
R
SS
ACC
= 0V and T
= 5 + 0.9 C
A
=-40 to +85°C
EXT
in ns; where C
Symbol
t A
t A
t
t
t
t
t
ADW
t
ACC
t
t
WR
t
DW
t
CS
DF
DH
t
PF
W
R
F
/Ds
/Dt
Test Conditions
C
EXT
LOAD
(external parasitic capacitance) is in pF
= 50pF
4
Min.
100
50
50
10
50
10
10
10
5
Typ.
50
30
www.emmicroelectronic.com
Max.
100
200
200
V3023
60
40
Table 4
Unit
Fig. 6a
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns