MIC2562A
Micrel
A
V
PP
Enable
0
V
PP
to 3.3V
B
V
PP
to 12V
C
V
PP
to 3.3V
D
V
PP
OFF
E
V
PP
to 5V
F
V
PP
to 12V
G
V
PP
to 5V
H
V
PP
OFF
J
VPP
to 12V
K
V
PP
OFF
t
13
t
7
12V
t
9
t
8
t
10
t
6
t
16
V
PP
Output
t
1
5V
3.3V
t
4
t
11
t
2
t
5
t
15
t
12
t
3
t
14
0
/FLAG
Figure 1. MIC2562A V
PP
Timing Diagram
V
PP
Enable is shown generically: refer to the timing tables. At time “A,” V
PP
= 3.3V is selected. At “B,” V
PP
is set to 12V. At
“C,” V
PP
= 3.3V (from 12V). At “D,” V
PP
is disabled. At “E,” V
PP
is programmed to 5V. At “F,” V
PP
is set to 12V. At “G,” V
PP
is
programmed to 5V. At “H,” V
PP
is disabled. At “J,” V
PP
is set to 12V. And at “K,” V
PP
is again disabled. R
L
= 100Ω for all
measurements. Load capacitance is negligible.
A
VCC
Enable
0
B
C
D
VCC to 3.3V
VCC OFF
VCC to 5V
VCC OFF
t1
t2
t4
t8
t6
5V
t3
t7
t5
3.3V
VCC
Output
0
/FLAG
0
Figure 2. MIC2562A V
CC
Timing Diagram
V
CC
Enable is shown generically: refer to the timing tables for specific control logic input. At time “A,” V
CC
is programmed to
3.3V. At “B,” V
CC
is disabled. At “C,” V
CC
is programmed to 5V. And at “D,” V
CC
is disabled. R
L
= 10Ω. FLAG pull-up resistor
is 10kΩ to V
CC3
IN.
June 2004
5
M9999-062204
MICREL [ MICREL SEMICONDUCTOR ]
