em3027 EM Microelectronic, em3027 Datasheet - Page 5

• Manufacturer Part Number: em3027
• Description: Real-time Clock With I2c Or Spi Interface, Crystal Temperature Compensation, Battery Switchover And Trickle Charger
• Manufacturer: EM Microelectronic

Table 7
Notes: The following parameters are tested during production test:
1. SDA =’0’, continuous clock applied at SCL
2. CS, SI =’1’, continuous clock applied at SCK, SO is not connected
3. V
Copyright © 2008, EM Microelectronic-Marin SA
07/08 – rev B
Dynamic current
SPI Interface
Low supply detection
level1
Low supply detection
level2
Switchover hysteresis
Input Parameters:
Low level input voltage
High level input voltage
Input Leakage
Output Parameters:
Low level output voltage
High level output
voltage
Low level output voltage
High level output
voltage
Low level output voltage
High level output
voltage
Output HiZ leakage on
INT
Oscillator:
Start-up voltage
Start-up time
Frequency stability over
voltage
Input capacitance on X1
Output capacitance on
X2
Trickle Charger
Current limiting
Resistors
meas
I
The parameters I
DD
: Peak to peak amplitude during capacitance measurement
, V
low1
R
, V
low2
, V
CC
IL
, V
, V
I
Δf/(f*ΔV)
LEAK_OUT
IH
R1.5k
hyst
R80k
R20k
C
V
V
V
V
T
, V
R5k
V
V
V
V
V
V
V
C
I
V
I
DD
low1
low2
STA
OUT
hyst
STA
IN
OH
OH
OH
OL
OL
OL
, V
IL
IH
IN
OL
, V
STA
OH
, T
SCK = 200 kHz
(See Note 2)
SCK = 1 MHz
(See Note 2)
SCK = 1 MHz
(See Note 2)
Supply voltage V
variation
Supply voltage V
variation
V
3.0V
at CS, CLKOE, SI
at CS, CLKOE, SI
0.0 < V
I
I
I
I
I
I
INT not active
T
1.8V ≤ V
+25°C
T
V
T
V
V
V
V
V
OL
OH
OL
OH
OL
OH
, I
STA
A
A
CC
meas
meas
CC
CC
CC
CC
STA
IN
= +25°C, f = 32.768kHz,
= +25°C, f = 32.768kHz,
= 0.4 mA
= 1.5 mA
= 5.0 mA
= 0.1 mA
= 1.5 mA
= 2.0 mA
with respect to V
=5.0V, V
=5.0V, V
=5.0V, V
=5.0V, V
, I
, C
< 10s
= 0.3V (Note 3)
= 0.3V (Note 3)
LEAK_OUT
IN
IN
CC
, C
< V
≤ 5.5V, T
OUT
CC
Back
Back
Back
Back
, Δf/(f*ΔV) are characterised during the qualification of the IC.
=3.0V
=3.0V
=3.0V
=3.0V
CC
CC
A
Back
=
=
5
1.3 to 5.0
1.3 to 5.0
1.3 to 5.0
1.3 to 5.0
1.3
3.3
5.0
1.3
3.3
5.0
5.0
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
25
25
25
25
25
25
25
0.8V
1.70
1.25
-1.5
-1.5
1.0
2.7
4.5
1.2
-1
-1
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CC
EM3027
0.5
0.5
5.0
1.5
20
16
16
80
20
1
0.2V
1.87
1.40
0.25
1.5
0.2
0.8
1.5
14
18
50
55
65
75
1
1
3
3
2
CC
ppm/V
mV
kΩ
kΩ
kΩ
kΩ
µA
µA
µA
µA
µA
pF
pF
V
V
V
V
V
V
V
V
V
V
V
s
s