TC648 Microchip, TC648 Datasheet - Page 16

• Manufacturer Part Number: TC648
• Description: Fan Speed Controller
• Manufacturer: Microchip

TC648
FIGURE 5-9:
DS21448C-page 16
Data from one or
Analog or Digital
more Sensors
Temperature
+5V
GND
TC648 as a Microcontroller Peripheral.
Microcontroller
Open-Drain
Outputs
Outputs
CMOS
CMOS
I/O0
I/O1
I/O2
I/O3
INT
(RESET)
(MSB)
(LSB)
+5V
110 k
240 k
360 k
1.5 k
(Optional)
R 1
R
R
R
2
3
1 k
5
R
6
R 4
18 k
+5V
33 k
.01 F
18 k
C
R
R
B
7
8
.01 F
1 F
+
C
1
2
3
4
B
C
V
V
GND
F
IN
AS
TC648
V
OTF
V
OUT
NC
DD
2002 Microchip Technology Inc.
8
6
5
7
+5V
+5V
10 k
+
1 F
R
C
10
B
800
R
9
+12V
Fan
2N2222A