MIC2564A
Micrel
Output Timing Diagrams
A
V
PP
Enable
0
V
PP
to 3.3V V
PP
to 12V
V
PP
to 3.3V V
PP
OFF
t
9
V
PP
to 5V
V
PP
to 12V
V
PP
to 5V
V
PP
OFF
B
C
D
E
F
G
H
J
K
V
PP
to 12V
V
PP
OFF
t
13
t
7
12V
t
8
t
10
t
6
t
16
V
PP
OUT
t
1
t
4
t
14
5V
3.3V
t
11
t
2
t
5
t
15
t
12
t
3
0
/FLAG
Figure 3. V
PP
Timing Diagram
V
PP
Enable is shown generically. R
L
= 100W. C
L
= negligible. Refer to the serial control timing diagrams for details.
At time “A”, V
PP
= 3.3V is selected, “B”, V
PP
is set to 12V, “C”, V
PP
= 3.3V (from 12V), “D”, V
PP
is disabled, “E”, V
PP
is
programmed to 5V, “F”, V
PP
is set to 12V, “G”, V
PP
is programmed to 5V, “H”, V
PP
is disabled, “J”, V
PP
is set to 12V, “K”, V
PP
is again disabled.
A
V
CC
Enable
0
B
C
D
V
CC
to 3.3V
t
17
t
19
V
CC
OFF
t
23
t
21
V
CC
to 5V
t
18
t
20
V
CC
OFF
t
24
t
22
5V
V
CC
3.3V
OUT
0
/FLAG
0
Figure 4. V
CC
Timing Diagram
V
CC
Enable is shown generically. R
L
= 10W. Refer to the serial control timing diagrams for specific control logic input.
At time “A”, V
CC
is programmed to 3.3V, “B”, V
CC
is disabled, “C”, V
CC
is programmed to 5V, “D”, V
CC
is disabled.
M0250-031104
6
March 2004
MICREL [ MICREL SEMICONDUCTOR ]
