FM3570 Fairchild Semiconductor, FM3570 Datasheet

no-image

FM3570

Manufacturer Part Number
FM3570
Description
CPU CONFIGURATION CONTROLLER Register/Multiplexer for Microprocessor VID
Manufacturer
Fairchild Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
FM3570MT20
Manufacturer:
F
Quantity:
20 000
Part Number:
FM3570MT20X
Manufacturer:
FSC
Quantity:
6 942
Part Number:
FM3570MT20X
Manufacturer:
TOS
Quantity:
834
Part Number:
FM3570MT20X
Manufacturer:
FAI
Quantity:
316
Part Number:
FM3570MT20X
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
© 2001 Fairchild Semiconductor Corporation
FM3570 Rev. A
The Fairchild FM3570 replaces the CPU motherboard’s configu-
ration switches with an electronic implementation consisting of a
4/5-bit multiplexed, 1-bit latched port, standard 2-wire bus inter-
face, and non-volatile latches.
The FM3570 multiplexes the I-port input signals with two internal
non-volatile registers that can be loaded through the serial port.
The multiplexer is selected via the serial port and defaults to the
I-port upon power-up. Pull-up resistors are provided on the input
port to accommodate connections to open-drain outputs and to
eliminate the need for external resistors. The device has open-
drain outputs for easy interface to devices with different V
levels.
SDA
SCL
IIC Read Logic
Start/Stop
Interface
I[4:0]
Logic
IIC
SOPRB
SOPRA
Mux3
Register
Shift
DD
The serial port is an IIC compatible slave-only interface and
supports both 100kbit and 400kbit modes of operation. The port
is used to read the I-Port, write data to the internal non-volatile
registers and select whether the I-port or one of the internal non-
volatile registers is output to the Y-port. The FM3570 is fabricated
with advanced CMOS technology to achieve high density and low
power operation.
I Extended Operating Voltage Range 3.0V-5.5V
I IIC Compatible Slave Interface.
I ESD performance: Human body model > 2000V
I Choice of 2.5V Outputs or Open-Drain Outputs
Slave Address
Comparator
Register
MXSB, MXSA
Control Logic
Mux2
Y[4:0]
Mux1
ASEL
Non_Mux_Out
MUXSEL
OVRD
www.fairchildsemi.com
www.fairchildsemi.com
March 2001

Related parts for FM3570

FM3570 Summary of contents

Page 1

... The port is used to read the I-Port, write data to the internal non-volatile registers and select whether the I-port or one of the internal non- volatile registers is output to the Y-port. The FM3570 is fabricated with advanced CMOS technology to achieve high density and low power operation. ...

Page 2

... Level 9 12 GND 10 11 FM3570 Rev. A Tube Tape & Reel 20-Pin SO Package Option 20-Pin TSSOP Package Option MTC20 20-Pin TSSOP MTC20 20-Pin TSSOP T & R M20B 20 Pin SO M20B 20 Pin SO T & [0:4] Y [0: ASEL SCL WP ...

Page 3

... The FM3570 block diagram is shown in Figure 1. The device has two primary functional modes of operationi and an additional mode for programming the device. Operational Modes During standard operation, the device will either pass an address to the Y-Port from the I-Port or from an internally programmed value. ...

Page 4

... Commands for reading and writing the registers are generated by the IIC Master. SDA SCL START Condition FM3570 Rev. A The IIC protocol uniquely defines START and STOP conditions. Mux_ No n_mux_ A START condition is defined as a HIGH to LOW transition of the outputs ouput SDA signal while SCL is HIGH ...

Page 5

... Output High Voltage OH I Input Leakage Current IR I Quiescent Supply Current CC V High Level Input Voltage IH V Low Level Input Voltage IL FM3570 Rev. A -0.5V to +6.5V Power Supply -0.5V to +6.5V Input Voltage -0.5V to +6.5V Output Voltage (V -0 +0.5V CC Output Current I -50mA Free Air Operating Temperature(T Minimum Input Edge Rate (dt/dv) ...

Page 6

... SDA and SCL Rise Time R t SDA and SCL Fall Time F t Stop Condition Setup Time SU:STO ° C Input Capacitance (I4-I0 Input/Output Capacitance (SDA) I/O C Output Capacitance (Y4-Y0) OUT Data Retention Number of writes FM3570 Rev. A ° ° ± ° ° 100 100 0.3 3.5 4.7 4.0 4.7 4.0 4.7 0 ...

Page 7

... Max Typ [0.254 - 0.737] 0.009-0.013 0.004 [0.229-0.330] [0.102] 0.016 - 0.050 TYP All Leads All Leads [0.406 - 1.270] Tips Typ All Leads FM3570 Rev 0.394 - 0.419 [10.008 - 10.643] Lead No. 1 IDENT 1 0.093 - 0.104 [2.362 - 2.642] All Leads [1.270] 0.014 [0 ...

Page 8

... Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. FM3570 Rev critical component is any component of a life support device ...

Related keywords