PCF8570 Philips Semiconductors, PCF8570 Datasheet

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PCF8570

Manufacturer Part Number
PCF8570
Description
256 x 8-bit static low-voltage RAM with I2C-bus interface
Manufacturer
Philips Semiconductors
Datasheet

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Product specification
Supersedes data of 1997 Sep 02
File under Integrated Circuits, IC12
DATA SHEET
PCF8570
256
with I
2
C-bus interface
8-bit static low-voltage RAM
INTEGRATED CIRCUITS
1999 Jan 06

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PCF8570 Summary of contents

Page 1

... DATA SHEET PCF8570 256 8-bit static low-voltage RAM 2 with I C-bus interface Product specification Supersedes data of 1997 Sep 02 File under Integrated Circuits, IC12 INTEGRATED CIRCUITS 1999 Jan 06 ...

Page 2

... Soldering by dipping or by solder wave 15.2.2 Manual soldering 15.3 Surface mount packages 15.3.1 Reflow soldering 15.3.2 Wave soldering 15.3.3 Manual soldering 15.4 Suitability of IC packages for wave, reflow and dipping soldering methods 16 DEFINITIONS 17 LIFE SUPPORT APPLICATIONS 18 PURCHASE OF PHILIPS I 1999 Jan 06 2 C-BUS 2 C COMPONENTS 2 Product specification PCF8570 ...

Page 3

... SO8 plastic small outline package; 8 leads; body width 7.5 mm 1999 Jan 06 3 GENERAL DESCRIPTION The PCF8570 is a low power static CMOS RAM, organized as 256 words by 8-bits. Addresses and data are transferred serially via a two-line bidirectional bus (I register is incremented automatically after each written or read data byte ...

Page 4

... REGISTER BUS CONTROL 8 SHIFT POWER REGISTER ON RESET Fig.1 Block diagram. DESCRIPTION 4 Product specification PCF8570 MEMORY ROW CELL SELECT ARRAY COLUMN MULTIPLEXER SELECT R/W CONTROL MLB928 page PCF8570 MLB929 SS Fig.2 Pin configuration TEST 6 SCL 5 SDA ...

Page 5

... HIGH period of the clock pulse as changes in the data line at this time will be interpreted as a control signal. data line change stable; of data data valid allowed Fig.3 Bit transfer. S Fig.4 Definition of start and stop conditions. 5 Product specification Bit transfer MBA607 SDA SCL P STOP condition MBA608 PCF8570 ...

Page 6

... In this event the transmitter must leave the data line HIGH to enable the master to generate a stop condition Fig.6 Acknowledgement on the I 6 Product specification PCF8570 MASTER MASTER TRANSMITTER / TRANSMITTER RECEIVER MBA605 clock pulse for acknowledgement 9 ...

Page 7

... I C-bus protocol 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. handbook, full pagewidth S SLAVE ADDRESS Fig.7 Master transmits to slave receiver (WRITE) mode. ...

Page 8

... MOS devices. Advice can be found in Data Handbook IC12 under “Handling MOS Devices” . 1999 Jan 06 acknowledgement acknowledgement from slave from slave DATA R/W n bytes auto increment word address PARAMETER 8 Product specification PCF8570 acknowledgement from slave DATA 1 P last bytes auto increment word address MBD824 MIN. MAX. 0.8 +8.0 0 0.8 ...

Page 9

... DDR DDR +70 C amb TEST = amb 2 C-bus logic when V < POR 9 Product specification PCF8570 MIN. TYP. MAX. 2.5 6.0 5 200 1.5 1.9 2.3 0.8 0. 250 +250 400 50 ...

Page 10

... C-bus specification, with applications, is given in brochure “The I BIT 7 BIT 6 MSB (A6) (A7) t HIGH LOW SCL SU;DAT HD;DAT 2 C-bus timing diagram; rise and fall times refer Product specification PCF8570 MIN. TYP. MAX. 100 100 4.7 4.7 4.0 4.7 4.0 1.0 0.3 250 0 3.4 4.0 2 C-bus and how to BIT 0 ...

Page 11

... PCF8570 A1 '1010' A2 SDA V SS TEST V DD SCL A0 PCF8570 A1 '1010' A2 SDA V SS TEST SDA SCL bus) Fig.11 Application diagram. 11 Product specification PCF8570 V DD SDA MASTER TRANSMITTER/ RECEIVER SCL PCF8570C pull up resistor BUS MLB931 and ...

Page 12

... Philips Semiconductors 256 8-bit static low-voltage RAM with 2 I C-bus interface 13.2 Slave address The PCF8570 has a fixed combination group 1, while group 2 is fully programmable (see Fig.12). handbook, halfpage 13.3 Power-saving mode With the condition TEST = handbook, full pagewidth ...

Page 13

... It is recommended that a 4.7 F/10 V solid aluminium capacitor (SAL) be connected between V (1) In the operating mode TEST = the power-saving mode TEST = V 1999 Jan 06 SDA SCL (1) TEST . DDR Fig.14 Application example for power-saving mode. 13 Product specification DDR PCF8570 1.2 V (NiCd MLB933 and PCF8570 ...

Page 14

... scale ( 0.53 1.07 0.36 9.8 0.38 0.89 0.23 9.2 0.021 0.042 0.014 0.39 0.015 0.035 0.009 0.36 REFERENCES JEDEC EIAJ MO-001AN ( 6.48 3.60 8.25 2.54 7.62 6.20 3.05 7.80 0.26 0.14 0.32 0.10 0.30 0.24 0.12 0.31 EUROPEAN PROJECTION Product specification PCF8570 SOT97-1 ( max. 10.0 0.254 1.15 8.3 0.39 0.01 0.045 0.33 ISSUE DATE 92-11-17 95-02-04 ...

Page 15

... REFERENCES JEDEC EIAJ detail 1.1 1.1 1.45 0.25 0.25 0.45 1.0 0.043 0.043 0.057 0.01 0.01 0.018 0.039 EUROPEAN PROJECTION Product specification PCF8570 SOT176 (1) Z 2.0 0.1 1 0.079 0.004 0.071 ISSUE DATE 95-02-25 97-05-22 ...

Page 16

... Use a low voltage ( less) soldering iron applied to the flat part of the lead. Contact time must be limited to 10 seconds 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 16 Product specification PCF8570 ...

Page 17

... Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm. 1999 Jan 06 PACKAGE suitable not suitable not suitable suitable not recommended not recommended 17 Product specification PCF8570 SOLDERING METHOD (1) WAVE REFLOW (2) suitable (3) suitable suitable (4)(5) suitable ...

Page 18

... Philips. This specification can be ordered using the code 9398 393 40011. 1999 Jan 06 C COMPONENTS 2 C components conveys a license under the Philips’ system provided the system conforms to the I 18 Product specification PCF8570 2 C patent to use the 2 C specification defined by ...

Page 19

... Philips Semiconductors 256 8-bit static low-voltage RAM with 2 I C-bus interface 1999 Jan 06 NOTES 19 Product specification PCF8570 ...

Page 20

... Tel. +46 8 5985 2000, Fax. +46 8 5985 2745 Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH, Tel. +41 1 488 2741 Fax. +41 1 488 3263 Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1, TAIPEI, Taiwan Tel. +886 2 2134 2865, Fax. +886 2 2134 2874 Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd., 209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260, Tel ...

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