24VL024H/MNY MICROCHIP [Microchip Technology], 24VL024H/MNY Datasheet - Page 5

• Manufacturer Part Number: 24VL024H/MNY
• Manufacturer: MICROCHIP [Microchip Technology]

2.0
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
2.1
This is a bidirectional pin used to transfer addresses
and data into and out of the device. It is an open drain
terminal. Therefore, the SDA bus requires a pull-up
resistor to V
400 kHz).
For normal data transfer, SDA is allowed to change
only during SCL low. Changes during SCL high are
reserved for indicating the Start and Stop conditions.
2.2
The SCL input is used to synchronize the data transfer
to and from the device.
2.3
The A0, A1 and A2 inputs are used by the 24VL024H
for multiple device operations. The levels on these
inputs are compared with the corresponding bits in the
slave address. The chip is selected if the compare is
true.
Up to eight 24VL024H devices may be connected to
the same bus by using different Chip Select bit
combinations. These inputs must be connected to
either V
In most applications the chip address inputs, A0, A1
and A2, are hard-wired to logic ‘0’ or logic ‘1’. For
applications in which these pins are controlled by a
microcontroller or other programmable device, the chip
address pins must be driven to logic ‘0’ or logic ‘1’
before normal device operation can proceed.
© 2008 Microchip Technology Inc.
A0
A1
A2
V
SDA
SCL
WP
V
SS
CC
Name
CC
PIN DESCRIPTIONS
SDA Serial Data
SCL Serial Clock
A0, A1, A2
or V
CC
SS
8-pin
PDIP
(typical 10 kΩ for 100 kHz, 2 kΩ for
.
1
2
3
4
5
6
7
8
PIN FUNCTION TABLE
SOIC
8-pin
1
2
3
4
5
6
7
8
TSSOP
8-pin
1
2
3
4
5
6
7
8
MSOP
8-pin
1
2
3
4
5
6
7
8
2.4
WP is the hardware write-protect pin. It must be tied to
V
is enabled and will protect half of the array (80h-FFh).
If the WP pin is tied to V
protection is disabled.
2.5
The 24VL024H employs a V
cuit that disables the internal erase/write logic if the
V
The SCL and SDA inputs have Schmitt Trigger and
filter circuits that suppress noise spikes to assure
proper device operation, even on a noisy bus.
CC
CC
or V
is below 1.2 volts at nominal conditions.
TDFN
8-pin
1
2
3
4
5
6
7
8
SS
WP
Noise Protection
. If tied to V
User Configurable Chip Select
User Configurable Chip Select
User Configurable Chip Select
Ground
Serial Data
Serial Clock
Write-Protect Input
+1.5V to 3.6V
CC
, the hardware write protection
24VL024H
CC
Function
SS
threshold detector cir-
the hardware write
DS22109A-page 5