PCF8570T/F5,512 NXP Semiconductors, PCF8570T/F5,512 Datasheet - Page 7

• Manufacturer Part Number: PCF8570T/F5,512
• Description: IC SRAM 2KBIT 100KHZ 8SOIC
• Manufacturer: NXP Semiconductors

Specifications of PCF8570T/F5,512

• Format - Memory: RAM
• Memory Type: SRAM
• Memory Size: 2K (256 x 8)
• Speed: 100kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.5 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (7.5mm Width)
• Density: 2Kb
• Access Time (max): 3400ns
• Sync/async: Synchronous
• Architecture: SDR
• Clock Freq (max): 100KHz
• Operating Supply Voltage (typ): 3.3/5V
• Address Bus: 3b
• Package Type: SO
• Operating Temp Range: -40C to 85C
• Number Of Ports: 1
• Supply Current: 0.2mA
• Operating Supply Voltage (min): 2.5V
• Operating Supply Voltage (max): 6V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Word Size: 8b
• Number Of Words: 256
• For Use With: 568-3512 - DEMO BOARD UART TO I2C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935154920512; PCF8570TD; PCF8570TD

Philips Semiconductors
8.5
Before any data is transmitted on the I
always carried out with the first byte transmitted after the start procedure. The I
PCF8570 WRITE and READ cycles is shown in Figs 7, 8 and 9.
1999 Jan 06
handbook, full pagewidth
handbook, full pagewidth
256
I
2
C-bus interface
I
2
S
C-bus protocol
8-bit static low-voltage RAM with
SLAVE ADDRESS
Fig.8 Master reads after setting word address (WRITE word address; READ data).
S
acknowledgement
R/W
from slave
SLAVE ADDRESS
0 A
Fig.7 Master transmits to slave receiver (WRITE) mode.
WORD ADDRESS
2
C-bus, the device which should respond is addressed first. The addressing is
acknowledgement
R/W
from slave
0 A
acknowledgement
from slave
WORD ADDRESS
at this moment master -
transmitter becomes
master - receiver and
PCF8570 slave -
receiver becomes
slave - transmitter
A
S
7
SLAVE ADDRESS
acknowledgement
from slave
A
acknowledgement
R/W
n bytes
from slave
DATA
1
MLB930
2
A
C-bus configuration for the different
memory word address
auto increment
acknowledgement
from slave
n bytes
DATA
A
MBD822
memory word address
last byte
P
acknowledgement
auto increment
DATA
from master
memory word address
Product specification
no acknowledgement
auto increment
A
PCF8570
from master
1
P