MIC2564A
Symbol
Parameter
Conditions
Min
Typ
Max
Micrel
Units
∞C
5.5
0.3V
CC3
IN
0.2
1
V
V
mA
mA
ns
ns
ns
ns
ns
ns
ns
ns
100
100
ns
ns
Thermal Shutdown
T
SD
V
IH
V
IL
I
IN
Flag
I
FLG
t
HD:DAT
t
SU:DAT
t
SU:SLA
t
SU:RST#
t
W
Flag Leakage Current
V
FLG
= 5V
75
Data before clock
75
50
RST# before data
Clock (t
W:CLK
)
Latch (t
W:SLA
)
Reset (t
W:RST
)
Data (t
W:DA
)
t
R
t
F
Notes:
14. Guaranteed by design not production tested.
15. Guaranteed by characterization but not production tested.
Thermal Shutdown Temperature
145
Serial Interface DC Specifications
Input Voltage: SDA, SCL, SLA pins
Input Voltage: SDA, SCL, SLA pins
Input Current
0V < V
IN
< 5.5V
0.7V
CC3
IN
–0.3
–1
1
Serial Interface Timing Requirements
(See Figures 1 and 2)
(14)
SDA Hold Time
SDA Setup Time
Latch Setup Time
Reset to Data Setup Time
Minimum Pulse Width
50
50
100
50
50
0
0
SCL Rise Time
SCL Fall Time
f = 32kHz
(15)
f = 32kHz
(15)
Serial Control Timing Diagram
t
W:DAT
RST#
t
SU:RST#
SDA
t
SU:DAT
SLA
t
W:CLK
t
HD:DAT
t
SU:SLA
t
W:SLA
D8
D7
D6
D5
D4
D3
D2
D1
D0
SCL
Figure 1. Serial Control Timing Diagram
The MIC2564A uses a three-wire serial interface to control V
CC
and V
PP
outputs for both sections A and B. The three control
lines have thresholds compatible with both 3.3V and 5V logic families. Data (SDA) is clocked in on the rising clock edge. The
clock signal may be continuous or it may halt after all data is clocked in.
t
r
SCL
90%
10%
90%
10%
t
f
Figure 2. SCL Rise and Fall Times
March 2004
5
M0250-031104
MICREL [ MICREL SEMICONDUCTOR ]
