pca9561 NXP Semiconductors, pca9561 Datasheet - Page 2

• Manufacturer Part Number: pca9561
• Description: Quad 6-bit Multiplexed I2c Eeprom Dip Switch
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
DESCRIPTION
The PCA9561 is a 20-pin CMOS device consisting of four 6-bit
non-volatile EEPROM registers, 6 hardware pin inputs and a 6-bit
multiplexed output. It is used for DIP switch-free or jumper-less
system configuration and supports Mobile and Desktop VID
Configuration, where 5 preset values (4 sets of internal non-volatile
registers and 1 set of external hardware pins) set processor voltage
for operation in various performance or battery conservation sleep
modes. The PCA9561 is also useful in server and
telecom/networking applications when used to replace DIP switches
or jumpers, since the settings can be easily changed via I
without having to power down the equipment to open the cabinet.
The non-volatile memory retains the most current setting selected
before the power is turned off.
ORDERING INFORMATION
Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.
2004 May 17
Selection of non-volatile register_n as source to MUX_OUT pins
via I
I
source
6-bit 5-to-1 multiplexer DIP switch
4 internal non-volatile registers
Internal non-volatile registers programmable and readable via
I
6 open drain multiplexed outputs
400 kHz maximum clock frequency
Operating supply voltage 3.0 V to 3.6 V
5 V and 2.5 V tolerant inputs/outputs
Useful for Speed Step configuration of laptop
2 address pins, allowing up to 4 devices on the I
MUX_IN values readable via I
ESD protection exceeds 200 V HBM per JESD22-A114, 200 V
MM per JESD22-A115, and 1000 V CDM per JESD22-C101
Latch-up testing is done to JESDEC Standard JESD78 which
exceeds 100 mA.
Speed Step is a registered trademark of Intel Corp.
Quad 6-bit multiplexed I
2
2
20-Pin Plastic TSSOP
C-bus can override MUX_SELECT pin in selecting output
C-bus
20-Pin Plastic SO
2
C-bus
PACKAGES
TEMPERATURE RANGE
2
C-bus
–40 to +85 C
–40 to +85 C
2
C EEPROM DIP switch
2
C-bus
2
C/SMBus
ORDER CODE
PCA9561PW
PCA9561D
2
The PCA9561 typically resides between the CPU and Voltage
Regulator Module (VRM) when used for CPU VID (Voltage
IDentification code) configuration. It is used to bypass the
CPU-defined VID values and provide a different set of VID values to
the VRM, if an increase in the CPU voltage is desired. An increase
in CPU voltage combined with an increase in CPU frequency leads
to a performance boost of up to 7.5%. Lower CPU voltage reduces
power consumption. The main advantage of the PCA9561 over
older devices, such as the PCA9559 or PCA9560, is that it contains
four internal non-volatile EEPROM registers instead of just one or
two, allowing five independent settings which allows a more
accurate CPU voltage tuning depending on specific applications.
The PCA9561 has 2 address pins, allowing up to 4 devices to be
placed on the same I
PIN CONFIGURATION
PIN DESCRIPTION
12–17
PIN
4–9
10
18
19
20
11
1
2
3
MUX_OUT_F–A
MUX_SELECT
MUX_IN_A–F
MUX_IN_A
MUX_IN_B
MUX_IN_C
MUX_IN_D
MUX_IN_E
MUX_IN_F
SYMBOL
I
I
TOPSIDE MARK
2
2
C SDA
C SCL
GND
V
WP
A0
A1
PCA9561D
DD
GND
PCA9561
SDA
SCL
2
A0
C-bus or SMBus.
10
1
2
3
4
5
6
7
8
9
Serial I
Serial bi-directional I
A0 address
External inputs to multiplexer
Ground
Selects MUX_IN inputs or register
contents for MUX_OUT outputs
Open drain multiplexed outputs
A1 address
Non-volatile register write-protect
Power supply: +3.0 to +3.6 V
2
C-bus clock
20
19
18
17
16
15
14
13
12
11
DRAWING NUMBER
FUNCTION
V
WP
A1
MUX_OUT_A
MUX_OUT_B
MUX_OUT_C
MUX_OUT_D
MUX_OUT_E
MUX_OUT_F
MUX_SELECT
DD
SOT163-1
SOT360-1
Product data sheet
PCA9561
2
C-bus data
SW00823