MIC2564A Micrel Semiconductor, MIC2564A Datasheet - Page 5

• Manufacturer Part Number: MIC2564A
• Description: Dual Serial PCMCIA/CardBus Power Controller Preliminary Information
• Manufacturer: Micrel Semiconductor

Symbol
Serial Interface Timing Requirements (See Figure 1), Note 10
t
t
t
t
t
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7.
Note 8.
Note 9.
Note 10. Guaranteed by design not production tested.
Serial Control Timing Diagram
The MIC2564A uses a three-wire serial interface to control V
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.
September 1999
MIC2564A
HD:DAT
SU:DAT
SU:SLA
SU:RST#
W
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended.
Output enabled into short circuit.
Measurement is from the 50% point of the SLA rising edge.
Measurement is from the Hi-Z- or 0V-state command to the beginning of the slope. Measurement does not apply when device is in current
limit or thermal shutdown.
V
V
V
3.3V and 5V are connected to the MIC2564A, V
CC3
PP
PP
and V
IN must be either high impedance or greater than or approximately equal to the highest voltage V
RST#
IN powers all internal logic, bias, and drive circuitry, and is required for operation.
SDA
SCL
SLA
Parameter
SDA Hold Time
SDA Setup Time
Latch Setup Time
Reset to Data Setup Time
Minimum Pulse Width
CC5
t
SU:RST#
IN are not required for operation.
t
SU:DAT
D8
Figure 1. Serial Control Timing Diagram
D7
PP
D6
t
HD:DAT
IN must be either 5V, 12V, or high impedance.
Conditions
data before clock
RST# before data
clock (t
latch (t
reset (t
data (t
t
D5
W:DAT
W:DA
W:SLA
W:RST
W:CLK
)
CC
)
D4
)
)
5
t
and V
W:CLK
D3
PP
outputs for both sections A and B. The three control
D2
D1
t
SU:SLA
D0
CC
in the system. For example, if both
Min
100
75
75
50
50
50
50
50
t
W:SLA
Typ
Max
MIC2564A
Micrel
Units
ns
ns
ns
ns
ns
ns
ns
ns