BR24C01 ROHM Electronics, BR24C01 Datasheet

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BR24C01

Manufacturer Part Number
BR24C01
Description
Manufacturer
ROHM Electronics
Datasheet
1.BR24C01.pdf (13 pages)

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Memory ICs
I
BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W /
BR24C01AFV-W / BR24C02-W / BR24C02F-W /
BR24C02FJ-W / BR24C02FV-W / BR24C04-W /
BR24C04F-W / BR24C04FJ-W / BR24C04FV-W
The BR24C01A-W, BR24C02-W, and BR24C04-W series are 2-wire (I
electrically programmable.
∗ I
! ! ! ! Applications
VCRs, TVs, printers, car stereos, cordless telephones, short wave radios, programmable DIP switches
! ! ! ! Features
! ! ! ! Absolute maximum ratings (Ta = 25°C)
∗1 Reduced by 3.0mW for each increase in Ta of 1°C over 25°C.
∗2 Reduced by 4.5mW for each increase in Ta of 1°C over 25°C.
∗3 Reduced by 8.0mW for each increase in Ta of 1°C over 25°C.
1) 128×8bits (1k) serial EEPROM.
2) Two wire serial interface.
3) Operating voltage range : 2.7V∼5.5V
4) Low current consumption
5) Auto erase and auto complete functions can be used
2
2
C BUS is a registered trademark of Philips.
Applied voltage
Power dissipation
Storage temperature
Operating temperature
Input voltage
C BUS compatible serial EEPROM
(BR24C01A-W / AF-W / AFJ-W / AFV-W)
256×8bits (2k) serial EEPROM.
(BR24C02-W / F-W / FJ-W / FV-W)
512×8bits (4k) serial EEPROM.
(BR24C04-W / F-W / FJ-W / FV-W)
Active (at 5V) : 1.5mA (Typ.)
Standby (at 5V) : 0.1µA (Typ.)
during write operations.
Parameter
BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W /
BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W
Symbol
Topr
Tstg
V
Pd
−
CC
300(SSOP−B8)
450(SOP8, SOP−J8)
800(DIP8)
−0.3 ~ V
−0.3 ~ +6.5
−65 ~ +125
−40 ~ +85
Limits
CC
+0.3
∗1
∗2
∗3
10) Compact packages.
11) Rewriting possible up to 100,000 times
12) Data can be stored for ten years without corruption.
6) Page write function.
7) DATA security
8) Noise filters at SCL and SDA pins.
9) Address can be incremented automatically during
BR24C01A-W / AF-W / AFJ-W / AFV-W : 8 bytes
BR24C02-W / F-W / FJ-W / FV-W : 8 bytes
BR24C04-W / F-W / FJ-W / FV-W : 16 bytes
Write protect feature
Inhibit to WRITE at low V
read operations.
Unit
mW
°C
°C
V
V
2
C BUS type) serial EEPROMs which are
CC

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BR24C01 Summary of contents

Page 1

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV BUS compatible serial EEPROM BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W The BR24C01A-W, BR24C02-W, and BR24C04-W series are 2-wire (I electrically programmable. ...

Page 2

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV Recommended operating conditions (Ta = 25°C) Parameter Symbol Power supply voltage V CC Input voltage Block diagram BR24C01A-W / AF-W / AFJ-W / AFV 1kbits EEPROM ARRAY 7bits SLAVE WORD ADDRESS ...

Page 3

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV Electrical characteristics DC characteristics (unless otherwise noted − °C, V Parameter Symbol Input high level voltage V IH Input low level voltage V IL Output low level coltage V OL Input leakage current ...

Page 4

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV Timing charts SCL t HD SDA (input) t BUF SDA (output) SCL t : STA SU SDA · Data is read on the rising edge of SCL. · Data is output in synchronization with the falling edge of SCL. ...

Page 5

... BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W (4) Device addressing – BR24C01A-W / AF-W / AFJ-W / AFV-W, BR24C02-W / F-W / FJ-W / FV-W 1) Make sure the slave address is output from the master immediately after the start condition. 2) The upper four bits of the slave address are used to determine the device type. The device code for this IC is fixed at “ ...

Page 6

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W When data is being read from the IC, eight bits of data (read data) are output and the IC waits for a returned LOW acknowledge signal (ACK signal). When an acknowledge signal (ACK signal) is detected and a stop condition is not sent from the master (µ ...

Page 7

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W BR24C02-W / F-W / FJ SLAVE R ADDRESS T SDA LINE WP BR24C04-W / F-W / FJ SLAVE R ADDRESS T SDA LINE WP • Data is written to the address designated by the word address (n address). ...

Page 8

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W • A 8-byte write is possible using this command. • Th page write command arbitrarily sets the upper four bits (WA6 to WA3) of the word address. The lower three bits (WA2 and WA0) can write up to eight bytes of data with the address being incremented internally. ...

Page 9

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W (9) Current read cycle BR24C01A-W / AF-W / AFJ-W / AFV SDA 1 LINE BR24C02-W / F-W / FJ SDA 1 LINE BR24C04-W / F-W / FJ SDA 1 LINE • In case the previous operation is random or current read (which includes sequential read respectively), the internal address counter is increased by one from the last accessed address (n) ...

Page 10

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W (10) Random read cycle BR24C01A-W / AF-W / AFJ-W / AFV SLAVE R T ADDRESS T E SDA LINE BR24C02-W / F-W / FJ SLAVE R T ADDRESS ...

Page 11

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV-W (11) Sequential read cycle (For a current read) BR24C01A-W / AF-W / AFJ-W / AFV SLAVE A R ADDRESS D T SDA LINE BR24C02-W / F-W / FJ SLAVE A R ADDRESS ...

Page 12

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV Operation notes (1) During power rise During power rise, the V may rise passing though the low voltage domain in which the IC internal circuit does not CC work. For this reason, there is a risk of misoperation when the power rises without full IC internal reset. ...

Page 13

... BR24C01A-W / BR24C01AF-W / BR24C01AFJ-W / BR24C01AFV-W / BR24C02-W / BR24C02F-W / Memory ICs BR24C02FJ-W / BR24C02FV-W / BR24C04-W / BR24C04F-W / BR24C04FJ-W / BR24C04FV External dimensions (Units : mm) BR24C01A-W BR24C02-W BR24C04-W 9.3 ± 0 2.54 0.5 ± 0.1 DIP8 BR24C01AFJ-W BR24C02FJ-W BR24C04FJ-W 4.9 ± 0 0.42 ± 0.1 1.27 0.1 SOP-J8 BR24C01AF-W BR24C02F-W BR24C04F-W 7. BR24C01AFV-W BR24C02FV-W BR24C04FV-W 3.0 ± ...

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