Download Am186CC Microcontroller Power Management Circuit Application

6
VCC
VCC
VCC
VCC
11k
FREQUENCY SELECT
11k
PULSE SAFTEY
11k
B
3
1
Q
11k
Q
ENABLE 4MHz
5
FREQUENCY OUTPUT CONTROL
CLK
INV
6
2
D
3
CLK
1
A
VCC
Q
Q
5
2
D
3
CLK
6
Q
Q
5
6
1
1
2
Y
1
11k
2
Y
3
B
VCC
U?
1
2
A
Y
3
2
B
3
D
Q
5
1
ENABLE 32 KHz
4
CLK
EN
OUT
5
GND
VCC
8
VCC
Q
1
A
2
B
U?
Y
3
1
2
A
Y
3
B
XOR-in
4 MHz Oscil
CL
AND-offhk
PR
4
VCC
A
NOR-4MHz
XOR-out
6
1
2
1
Am186™CC Microcontroller Power Management Circuit Application Note
AND-onhk
D
4
2
PR
3
Y
CL
A
4
2
PR
1
CL
2
PR
Y
A
Schmitt Trigger
CL
1
4
HOOK SW
A
Y
3
Y
3
B
NOR-32KHz
VCC
5
OUT
EN
1
8
VCC
GND
4
U?
1
2
32.7KHz Oscil
VCC
1
A
2
B
Y
B
NOR-24MHz
When input 1 to a NOR gate is low
that particular frequency is
selected.
RESET
24MHz
A
3
VCC
NOR-pwrgood
Serves as an INVERTER
11K
100K
POWERGOOD
100K
1
A
Y
2
Schmitt Trigger
0.1 uF
0.1 uF
U?
1
2
A
Y
3
1
A
2
B
B
RESET#
Y
3
AND-reset
XOR-reset
ENABLE 24 MHz
1
4
EN
OUT
GND
VCC
5
VCC
8
24 MHz Oscil
PLL CONFIGURATION
11K
HLDA {CLKSEL1}
11K
PCS4 {CLKSEL2}
(C) Advanced Micro Devices, Inc.
5204 E. Ben White Blvd.
Austin, TX 78741
AMD Proprietary/All Rights Reserved
Title
186CC Power Management
Size
Figure 4.
Power Management Circuit Schematic In Sections
Document Number
Logic Grouped Circuit
(800) 222-9323