EMC2302 Standard Microsystems Corp., EMC2302 Datasheet - Page 7

• Manufacturer Part Number: EMC2302
• Description: Rpm-based Pwm Fan Controller
• Manufacturer: Standard Microsystems Corp.

Dual RPM-Based PWM Fan Controller
Datasheet
Chapter 1 Pin Description
SMSC EMC2302
PIN NUMBER
1
2
3
4
5
6
7
8
SMDATA
SMCLK
PWM1
GND
VDD
PIN NAME
SMDATA
Figure 1.1 EMC2302 Pin Diagram (10-Pin MSOP)
SMCLK
TACH1
TACH2
PWM1
PWM2
GND
VDD
Table 1.1 Pin Description for EMC2302
1
2
3
4
5
DATASHEET
EMC2302
10-MSOP
Open Drain PWM output driver for Fan 1
Open Drain PWM output driver for Fan 2
Open drain tachometer input for Fan 2 -
Open drain tachometer input for Fan 1-
Push-Pull PWM output driver for Fan 1
Push-Pull PWM output driver for Fan 2
SMBus clock input - requires external
SMBus data input/output - requires
7
external pull-up resistor
requires pull-up resistor
requires pull-up resistor
PIN FUNCTION
pull-up resistor
Power Supply
Ground
10
9
8
7
6
ALERT#
CLK
TACH2
PWM2
TACH1
Revision 1.2 (03-22-10)
DIOD (5V)
PIN TYPE
OD (5V)
OD (5V)
DI (5V)
DI (5V)
DI (5V)
Power
Power
DO
DO