FM3570 Datasheet, PDF (2/8 Pages) Fairchild Semiconductor – CPU CONFIGURATION CONTROLLER Register/Multiplexer for Microprocessor VID

Ordering Code
FM
3570
XXXX
X
Blank
X
Tube
Tape & Reel
M20
MT20
20-Pin SO Package Option
20-Pin TSSOP Package Option
Order Number
Package Number Package Description
FM3570MT20
MTC20
20-Pin TSSOP
FM3570MT20X
MTC20
20-Pin TSSOP T & R
FM3570M20
M20B
20 Pin SO
FM3570M20X
M20B
20 Pin SO T & R
For all other combinations, check with Fairchild Marketing/Sales
Pin Connection Diagram
20-Pin Packages
FM3570
SCL
1
SDA
2
OVRD
3
I0
4
I1
5
I2
6
I3
7
I4
8
Level
9
GND
10
20
V_CC
19
ASEL
18
WP
17
Non_Mux_Out
16
MUXSEL
15
Y0
14
Y1
13
Y2
12
Y3
11
Y4
Pin Description
Pin Name
I [0:4]
Y [0:4]
SCL
OVRD
WP
Non_mux_out
MUXSEL
EPV
ASEL
SDA
Description
Data Inputs w/Pullups (10K-40K)
Open-Drain Data Outputs
Serial Port Clock Input (120K pullup)
Override Input. Sets all outputs to 0
Write Protect Input
Non-Multiplexed Output
Multiplexer Select Input
I Port Pull-up Resistor Voltage
Address Select Input
Serial Port Data I/O (120K pull-up)
FM3570 Rev. A
2
www.fairchildsemi.com