PHILIPS PCF85116-3P

INTEGRATED CIRCUITS
DATA SHEET
PCF85116-3
2048 × 8-bit CMOS EEPROM with
I2C-bus interface
Product specification
Supersedes data of 1997 Feb 24
File under Integrated Circuits, IC12
1997 Apr 02
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
CONTENTS
1
FEATURES
2
DESCRIPTION
2.1
Remark
3
QUICK REFERENCE DATA
4
ORDERING INFORMATION
5
DEVICE SELECTION
6
BLOCK DIAGRAM
7
PINNING
8
I2C-BUS PROTOCOL
8.1
8.2
8.3
8.4
8.4.1
8.4.2
8.4.3
8.5
8.5.1
Bus conditions
Data transfer
Device addressing
Write operations
Byte/word write
Page Write
Remark
Read operations
Remark
1997 Apr 02
2
PCF85116-3
9
LIMITING VALUES
10
CHARACTERISTICS
11
I2C-BUS CHARACTERISTICS
12
WRITE CYCLE LIMITS
13
PACKAGE OUTLINES
14
SOLDERING
14.1
14.2
14.2.1
14.2.2
14.3
14.3.1
14.3.2
14.3.3
Introduction
DIP
Soldering by dipping or by wave
Repairing soldered joints
SO
Reflow soldering
Wave soldering
Repairing soldered joints
15
DEFINITIONS
16
LIFE SUPPORT APPLICATIONS
17
PURCHASE OF PHILIPS I2C COMPONENTS
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
1
2
FEATURES
PCF85116-3
DESCRIPTION
The PCF85116-3 is an 16 kbits (2048 × 8-bit) floating gate
Electrically Erasable Programmable Read Only Memory
(EEPROM). By using redundant EEPROM cells it is fault
tolerant to single bit errors. In most cases multi bit errors
are also covered. This feature dramatically increases
reliability compared to conventional EEPROM memories.
Power consumption is low due to the full CMOS
technology used. The programming voltage is generated
on-chip, using a voltage multiplier.
• Low power CMOS:
– maximum operating current 1.0 mA
– maximum standby current 10 µA (at 5.5 V),
typical 4 µA
• Non-volatile storage of 16 kbits organized as eight
blocks of 256 × 8-bit each
• Single supply with full operation down to 2.7 V
• On-chip voltage multiplier
As data bytes are received and transmitted via the serial
I2C-bus, a package using eight pins is sufficient. Only one
PCF85116-3 device is required to support all eight blocks
of 256 × 8-bit each.
• Serial input/output I2C-bus (100 kbits/s standard-mode
and 400 kbits/s fast-mode)
• Write operations: multi byte write mode up to 32 bytes
• Write-protection input
Timing of the E/W cycle is carried out internally, thus no
external components are required. A write-protection input
at pin 7 (WP) allows disabling of write-commands from the
master by a hardware signal. When pin 7 is HIGH the data
bytes received will not be acknowledged by the
PCF85116-3 and the EEPROM contents are not changed.
• Read operations:
– sequential read
– random read
• Internal timer for writing (no external components)
• Power-on-reset
• High reliability by using redundant EEPROM cells
2.1
• Endurance: 1000000 Erase/Write (E/W) cycles at
Tamb = 22 °C
The PCF85116-3 is pin and address compatible to the
PCx85xxC-2 family. The PCF85116-3 covers the whole
address space of 16 kbits; address inputs are no longer
needed. Therefore, pins 1 to 3 are not connected.
The write-protection input is at pin 7.
• 20 years non-volatile data retention time (minimum)
• Pin and address compatible to the PCx85xxC-2 family
(see also Section 2.1)
Remark
• 2 kV ESD protection (Human Body model).
3
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VDD
supply voltage
IDDR
supply current read
fSCL = 400 kHz; VDD = 5.5 V
IDDW
supply current E/W
fSCL = 400 kHz; VDD = 5.5 V
−
1.0
mA
Istb
standby supply current
VDD = 2.7 V
−
6
µA
VDD = 5.5 V
−
10
µA
1997 Apr 02
3
2.7
5.5
V
−
1.0
mA
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
4
PCF85116-3
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
PCF85116-3P
DIP8
plastic dual in-line package; 8 leads (300 mil)
SOT97-1
PCF85116-3T
SO8
plastic small outline package; 8 leads; body width 3.9 mm
SOT96-1
5
DEVICE SELECTION
Table 1
Device selection code
SELECTION
Bit
Device
DEVICE CODE
CHIP ENABLE
b6
b5
b4
b3
b2
b1
b0
1
0
1
0
MEM SEL
MEM SEL
MEM SEL
R/W
Note
1. The Most Significant Bit (MSB) ‘b7’ is sent first.
1997 Apr 02
R/W
b7(1)
4
1997 Apr 02
SCL
SDA
n
INPUT
FILTER
I2C-BUS CONTROL LOGIC
5
5
SHIFT
REGISTER
ROW
DEC
HV
GENERATOR
Fig.1 Block diagram.
EEPROM ARRAY
(8 × 256 × 8)
PAGE REGISTER
COLUMN DECODER
ADDRESS
COMPARATOR
ADDRESS
POINTER
6
OSCILLATOR
DIVIDER
SEQUENCER
MBH922
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
VSS
4
POWER-ON-RESET
TEST MODE
REGISTER
7
8
PCF85116-3
5
6
WP
6
VDD
Philips Semiconductors
Product specification
PCF85116-3
BLOCK DIAGRAM
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
7
PINNING
SYMBOL
PIN
DESCRIPTION
n.c.
1
not connected
n.c.
2
not connected
n.c.
3
not connected
VSS
4
negative supply voltage
SDA
5
serial data input/output (I2C-bus)
SCL
6
serial clock input (I2C-bus)
WP
7
write-protection input
VDD
8
positive supply voltage
8
handbook, halfpage
n.c.
2
8
VDD
7
WP
n.c.
3
6
SCL
VSS
4
5
SDA
Fig.2 Pin configuration.
Data transfer is unlimited in the read mode.
The information is transmitted in bytes and each receiver
acknowledges with a ninth bit.
I2C-BUS PROTOCOL
Within the I2C-bus specifications a low-speed mode (2 kHz
clock rate), a high speed mode (100 kHz clock rate) and a
fast speed mode (400 kHz clock rate) are defined.
The PCF85116-3 operates in all three modes.
By definition a device that sends a signal is called a
‘transmitter’, and the device which receives the signal is
called a ‘receiver’. The device which controls the signal is
called the ‘master’. The devices that are controlled by the
master are called ‘slaves’.
The following protocol has been defined:
• Data transfer may be initiated only when the bus is not
busy
• During data transfer, the data line must remain stable
whenever the clock line is HIGH. Changes in the data
line while the clock line is HIGH will be interpreted as
control signals.
Each byte is followed by one acknowledge bit.
This acknowledge bit is a HIGH level, put on the bus by the
transmitter. The master generates an extra acknowledge
related clock pulse. The slave receiver which is addressed
is obliged to generate an acknowledge after the reception
of each byte.
Bus conditions
The following bus conditions have been defined:
• Bus not busy: both data and clock lines remain HIGH.
The master receiver must generate an acknowledge after
the reception of each byte that has been clocked out of the
slave transmitter.
• Start data transfer: a change in the state of the data line,
from HIGH-to-LOW, while the clock is HIGH, defines the
START condition
The device that acknowledges has to pull down the SDA
line during the acknowledge clock pulse in such a way that
the SDA line is stable LOW during the HIGH period of the
acknowledge related clock pulse.
• Stop data transfer: a change in the state of the data line,
from LOW-to-HIGH, while the clock is HIGH, defines the
STOP condition
• Data valid: the state of the data line represents valid
data when, after a START condition, the data line is
stable for the duration of the HIGH period of the clock
signal. There is one clock pulse per bit of data.
Set-up and hold times must be taken into account.
A master receiver must signal an end of data to the slave
transmitter by not generating an acknowledge on the last
byte that has been clocked out of the slave. In this event
the transmitter must leave the data line HIGH to enable the
master generation of the STOP condition.
Data transfer
Each data transfer is initiated with a START condition and
terminated with a STOP condition; the number of the data
bytes, transferred between the START and STOP
conditions is limited to 32 bytes in the E/W mode.
1997 Apr 02
1
MBH923
Both the SDA and SCL lines must be connected to a
positive supply voltage via a pull-up resistor.
8.2
n.c.
PCF85116-3
The I2C-bus is for 2-way, 2-line communication between
different ICs or modules. The serial bus consists of two
bidirectional lines: one for data signals (SDA), and one for
clock signals (SCL).
8.1
PCF85116-3
6
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
8.3
Device addressing
PCF85116-3
8.4.2
PAGE WRITE
read: auto increment
handbook, halfpage
handbook, halfpage
1
0
1
0
B
B
B
R/W
B
B
B
WORD ADDRESS
MBH924
write: unchanged
write: auto increment
MBH925
Fig.3 Slave address.
Fig.4 Auto increment of memory address.
Following a START condition the bus master must output
the address of the slave it is accessing. The 4 MSBs of the
slave address are the device type identifier (see Fig.3).
For the PCF85116-3 this is fixed to ‘1010’.
The PCF85116-3 is capable of an 32-byte page write
operation. It is initiated in the same manner as the byte
write operation. The master can transmit up to 32 data
bytes within one transmission. After receipt of each byte
the PCF85116-3 will respond with an acknowledge.
The master terminates the transfer by generating a STOP
condition. The maximum total E/W time in this mode is
10 ms.
The next three significant bits of the slave address field are
the block selection bits. It is used by the host to select one
out of eight blocks (1 block = 256 bytes of memory). These
are, in effect, the three most significant bits of the word
address.
After the receipt of each data byte the six high order bits of
the memory address providing access to one of the
64 pages of the memory remain unchanged. The five low
order bits of the memory address will be incremented only
(see Fig.3). By these five bits a single byte within the page
in access is selected. By an increment the memory
address may change from 31 to 0, from 63 to 32, etc. If the
master transmits more than 32 bytes prior to generating
the STOP condition, data within the addressed page may
be overwritten and unpredictable results may occur. As in
the byte write operation, all inputs are disabled until
completion of the internal write cycles.
The last bit of the slave address defines the operation to
be performed. When R/W is set to logic 1 a read operation
is selected.
8.4
8.4.1
Write operations
BYTE/WORD WRITE
For a write operation the PCF85116-3 requires a second
address field. This address field is a word address
providing access to any one of the eight blocks of memory.
Upon receipt of the word address the PCF85116-3
responds with an acknowledge and awaits the next eight
bits of data, again responding with an acknowledge. Word
address is automatically incremented. The master
terminates the transfer by generating a STOP condition.
8.4.3
Write accesses to the EEPROM are enabled if the pin WP
is LOW. When WP is HIGH the EEPROM is
write-protected and no acknowledge will be given by the
PCF85116-3 when data is sent. However, an
acknowledge will be given after the slave address and the
word address.
After this stop condition the E/W cycle starts and the bus
is free for another transmission. Its duration is maximum
10 ms.
During the E/W cycle the slave receiver does not send an
acknowledge bit if addressed via the I2C-bus.
1997 Apr 02
REMARK
7
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
acknowledge
from slave
acknowledge
from slave
handbook, full pagewidth
B B B 0 A
S
SLAVE ADDRESS
PCF85116-3
A
WORD ADDRESS
acknowledge
from slave
DATA
acknowledge
from slave
DATA
A
A
P
R/W
auto increment
word address
auto increment
word address
MBH926
Fig.5 Auto increment memory address; two byte write.
acknowledge
from slave
handbook, full pagewidth
S
B B B 0 A
SLAVE ADDRESS
acknowledge
from slave
WORD ADDRESS
acknowledge
from slave
DATA N
A
A
acknowledge
from slave
DATA N + 1
A
R/W
auto increment
word address
auto increment
word address
acknowledge
from slave
DATA N + 31
A
P
last byte
MBH927
Fig.6 Page write operation; 32 bytes.
1997 Apr 02
8
auto increment
word address
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
8.5
Read operations
8.5.1
Read operations are initiated in the same manner as write
operations with the exception that the LSB of the slave
address (R/W) is set to logic 1. There are three basic read
operations; current address read, random read and
sequential read.
S
B B B 0 A
WORD ADDRESS
A
R/W
SLAVE ADDRESS
REMARK
During read operations all bits of the memory address are
incremented after each transmission of a data byte.
Contrary to write operations an overflow of the memory
address occurs from 2047 to 0 (see Fig.3).
acknowledge
from slave
acknowledge
from slave
handbook, full pagewidth
PCF85116-3
acknowledge
from slave
S
B B B 1 A
SLAVE ADDRESS
R/W
acknowledge
from master
DATA
A
n bytes
auto increment
word address
at this moment master
transmitter becomes
master receiver and
EEPROM slave receiver
becomes slave transmitter
no acknowledge
from master
DATA
1
P
last byte
auto increment
word address
MBH928
Fig.7 Master reads PCx85116-3 slave after setting word address (write word address; read data).
acknowledge
from master
acknowledge
from slave
handbook, full pagewidth
S
B B B 1 A
SLAVE ADDRESS
R/W
DATA
A
n bytes
no acknowledge
from master
DATA
1
P
last bytes
auto increment
word address
auto increment
word address
MBH929
Fig.8 Master reads PCx85116-3 immediately after first byte (read mode).
1997 Apr 02
9
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
PCF85116-3
9 LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
−0.3
+6.5
V
VSS − 0.8
+6.5
V
input current on any pin
−
1
mA
IO
output current
−
10
mA
Tstg
storage temperature
−65
+150
°C
Tamb
operating ambient temperature
−40
+85
°C
Vesd
electrostatic discharge voltage
2
−
kV
VDD
supply voltage
VI
input voltage on any pin
II
Zi > 500 Ω
note 1
Note
1. ESD Human Body model Q22 at Tamb = 22 °C; discharge procedure according to MIL-STD-883C Method 3015.
10 CHARACTERISTICS
VDD = 2.7 to 5.5 V; VSS = 0 V; Tamb = −40 to +85 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
Supplies
VDD
supply voltage
2.7
5.5
V
IDDR
supply current read
fSCL = 400 kHz;
VDD = 5.5 V
−
1.0
mA
IDDW
supply current E/W
fSCL = 400 kHz;
VDD = 5.5 V
−
1.0
mA
IDD(stb)
standby supply current
VDD = 2.7 V
−
6
µA
VDD = 5.5 V
−
10
µA
SDA input/output (pin 5)
VIL
LOW level input voltage
−0.8
+0.3VDD
V
VIH
HIGH level input voltage
0.7VDD
6.5
V
VOL1
LOW level output voltage
IOL = 3 mA; VDD(min)
−
0.4
V
IOL = 6 mA; VDD(min)
−
0.6
V
ILO
output leakage current
VOH = VDD
−
1
µA
to(f)
output fall time from VIHmin to VILmax
note 1
VOL2
with up to 3 mA sink current at VOL1
20 + 0.1Cb 250
ns
with up to 6 mA sink current at VOL2
20 + 0.1Cb 250
ns
0
100
ns
−
10
pF
tSP
pulse width of spikes suppressed by filter
CI
input capacitance
1997 Apr 02
VI = VSS
10
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
SYMBOL
PARAMETER
PCF85116-3
CONDITIONS
MIN.
MAX.
UNIT
SCL input (pin 6)
VIL
LOW level input voltage
−0.8
+0.3VDD
V
VIH
HIGH level input voltage
0.7VDD
6.5
V
ILI
input leakage current
−
±1
µA
fSCL
clock input frequency
0
400
kHz
tSP
pulse width of spikes suppressed by filter
0
100
ns
CI
input capacitance
−
7
pF
VI = VDD or VSS
VI = VSS
WP input (pin 7)
VIL
LOW level input voltage
−0.8
+0.1VDD
V
VIH
HIGH level input voltage
0.9VDD
VDD + 0.8
V
20
−
years
Data retention time
tS
Tamb = 55 °C
data retention time
Note
1. The bus capacitance ranges from 10 to 400 pF (Cb = total capacitance of one bus line in pF).
11 I2C-BUS CHARACTERISTICS
All of the timing values are valid within the operating supply voltage and ambient temperature range and refer to VIL and
VIH with an input voltage swing from VSS to VDD.
STANDARD MODE
SYMBOL
PARAMETER
FAST MODE
CONDITIONS
UNIT
MIN.
MAX.
MIN.
MAX.
fSCL
clock frequency
0
100
0
400
kHz
tBUF
time the bus must be free before
new transmission can start
4.7
−
1.3
−
µs
tHD;STA
START condition hold time after
which first clock pulse is generated
4.0
−
0.6
−
µs
tLOW
LOW level clock period
4.7
−
1.3
−
µs
tHIGH
HIGH level clock period
4.0
−
0.6
−
µs
tSU; STA
set-up time for START condition
4.7
−
0.6
−
µs
tHD; DAT
data hold time
5
−
−
−
µs
0
−
0
−
ns
data set-up time
250
−
100
−
ns
300
ns
300
ns
−
µs
repeated start
for CBUS compatible masters
for I2C-bus devices
tSU; DAT
note 1
tr
SDA and SCL rise time
−
1000
20 +
tf
SDA and SCL fall time
−
300
20 +
tSU; STO
set-up time for STOP condition
4.0
−
0.6
0.1Cb(2)
0.1Cb(2)
Notes
1. The hold time required (not greater than 300 ns) to bridge the undefined region of the falling edge of SCL must be
internally provided by a transmitter.
2. Cb = total capacitance of one bus line in pF.
1997 Apr 02
11
1997 Apr 02
P
t BUF
S
t HD;STA
t LOW
tr
12
t HIGH
handbook, full pagewidth
t SU;DAT
Fig.9 Timing requirements for the I2C-bus.
t HD;DAT
tf
t SU;STO
t SU;STA
MBA705
P
S
t HD;STA
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
P = STOP condition; S = START condition.
SCL
SDA
Philips Semiconductors
Product specification
PCF85116-3
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
PCF85116-3
12 WRITE CYCLE LIMITS
The Power-on-reset circuit resets the I2C-bus logic with a set-up time of ≤10 µs.Enabling the chip is achieved by
connecting the WP input to VSS.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
E/W cycle timing
tE/W
−
−
10
ms
Tamb = −40 to +85 °C
100000
−
−
cycles
Tamb = 22 °C
1000000 −
−
cycles
E/W cycle time
Endurance
NE/W
1997 Apr 02
E/W cycle per byte
13
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
PCF85116-3
13 PACKAGE OUTLINES
SO8: plastic small outline package; 8 leads; body width 3.9 mm
SOT96-1
D
E
A
X
c
y
HE
v M A
Z
5
8
Q
A2
A
(A 3)
A1
pin 1 index
θ
Lp
1
L
4
e
detail X
w M
bp
0
2.5
5 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D (1)
E (2)
e
HE
L
Lp
Q
v
w
y
Z (1)
mm
1.75
0.25
0.10
1.45
1.25
0.25
0.49
0.36
0.25
0.19
5.0
4.8
4.0
3.8
1.27
6.2
5.8
1.05
1.0
0.4
0.7
0.6
0.25
0.25
0.1
0.7
0.3
0.01
0.019 0.0098
0.014 0.0075
0.20
0.19
0.16
0.15
0.050
0.24
0.23
0.039 0.028
0.041
0.016 0.024
inches
0.0098 0.057
0.069
0.0039 0.049
0.01
0.01
0.028
0.004
0.012
θ
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
SOT96-1
076E03S
MS-012AA
1997 Apr 02
EIAJ
EUROPEAN
PROJECTION
ISSUE DATE
92-11-17
95-02-04
14
o
8
0o
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
PCF85116-3
DIP8: plastic dual in-line package; 8 leads (300 mil)
SOT97-1
ME
seating plane
D
A2
A
A1
L
c
Z
w M
b1
e
(e 1)
b
MH
b2
5
8
pin 1 index
E
1
4
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
UNIT
A
max.
A1
min.
A2
max.
b
b1
b2
c
D (1)
E (1)
e
e1
L
ME
MH
w
Z (1)
max.
mm
4.2
0.51
3.2
1.73
1.14
0.53
0.38
1.07
0.89
0.36
0.23
9.8
9.2
6.48
6.20
2.54
7.62
3.60
3.05
8.25
7.80
10.0
8.3
0.254
1.15
inches
0.17
0.020
0.13
0.068
0.045
0.021
0.015
0.042
0.035
0.014
0.009
0.39
0.36
0.26
0.24
0.10
0.30
0.14
0.12
0.32
0.31
0.39
0.33
0.01
0.045
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
SOT97-1
050G01
MO-001AN
1997 Apr 02
EIAJ
EUROPEAN
PROJECTION
ISSUE DATE
92-11-17
95-02-04
15
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.
14 SOLDERING
14.1
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
14.3.2
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “IC Package Databook” (order code 9398 652 90011).
14.2
14.2.1
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
DIP
SOLDERING BY DIPPING OR BY WAVE
• The longitudinal axis of the package footprint must be
parallel to the solder flow.
• The package footprint must incorporate solder thieves at
the downstream end.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (Tstg max). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.
REPAIRING SOLDERED JOINTS
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
14.3
14.3.1
14.3.3
REPAIRING SOLDERED JOINTS
Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.
SO
REFLOW SOLDERING
Reflow soldering techniques are suitable for all SO
packages.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
1997 Apr 02
WAVE SOLDERING
Wave soldering techniques can be used for all SO
packages if the following conditions are observed:
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
14.2.2
PCF85116-3
16
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
PCF85116-3
15 DEFINITIONS
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
16 LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
17 PURCHASE OF PHILIPS I2C COMPONENTS
Purchase of Philips I2C components conveys a license under the Philips’ I2C patent to use the
components in the I2C system provided the system conforms to the I2C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.
1997 Apr 02
17
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
NOTES
1997 Apr 02
18
PCF85116-3
Philips Semiconductors
Product specification
2048 × 8-bit CMOS EEPROM with I2C-bus
interface
NOTES
1997 Apr 02
19
PCF85116-3
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© Philips Electronics N.V. 1997
SCA53
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Printed in The Netherlands
417067/1200/02/pp20
Date of release: 1997 Apr 02
Document order number:
9397 750 01994