isl24201 Intersil Corporation, isl24201 Datasheet - Page 9

• Manufacturer Part Number: isl24201
• Description: Programmable Vcom Calibrator With Eeprom
• Manufacturer: Intersil Corporation

FIGURE 11. I
FIGURE 12. EEPROM PROGRAMMING FLOWCHART
200µA
2.7mA
50µA
90µA
25µA
PROGRAMMING
DD
I
AND I
P
AVDD
E E P R O M C e lls
S ta rt E E P R O M
C e lls E ra s e d ?
P ro g ra m m e d ?
A re E E P R O M
P ro g ra m m in g
P ro g ra m m in g
E ra s e P u ls e
W rite P u ls e
E E P R O M
C o m p le te
CURRENT PROFILE DURING EEPROM
A re
100ms
9
Max
Y e s
Y e s
N o
N o
~1ms
ISL24201
ISL24201 Programming
The ISL24201 accepts I
pin is at or above V
bus when the WP pin is at or below V
shows the serial data format for writing the register and
programming the EEPROM. Figure 14 shows the serial data
format for reading the DAC register. Table 2 shows the truth table
for reading and writing the device.
Programming the EEPROM memory transfers the current DAC
register value to the EEPROM and occurs when the control bits
select the programming mode and the A
After the EEPROM programming cycle is started, the WP pin can
be returned to logic low while the while it completes, which takes
a maximum of 100ms.
The ISL24201 uses a 6 bit I
complete read and write protocol is shown in Figures 13 and 14.
I
The ISL24201 uses fixed voltages for its I
than the percentage of V
(see Table 3). This should not cause a problem in most systems,
but the I
ensure they are compatible with the ISL24201.
2
WP PIN
C Bus Signals
0
0
0
1
1
1
SYMBOL
I
I
2
2
2
C logic levels in a specific design should be checked to
CV
CV
TABLE 2. ISL24201 READ AND WRITE CONTROL
IH
IL
TABLE 3. ISL24201 I
R/W
1
0
0
1
0
0
IH
I
(>0.7V
2
C BITS
2
DD
C bus address and data when the WP
PROGRAM
2
ISL24201
DD
described in the I
C address, which is “100111xx”. The
0.55V
1.44V
X
1
0
X
1
0
). The ISL24201 ignores the I
2
C BUS LOGIC LEVELS
IL
transactions. Will not write to
transactions. Will not write to
(<0.3V
VDD
2
Will acknowledge I
Will acknowledge I
C thresholds, rather
Write DAC Register
Read DAC Register
Program EEPROM
Read Register.
voltage is >10.8V.
2
DD
FUNCTION
C specification
EEPROM.
I
register
2
). Figure 13
C STANDARD
0.3*V
0.7*V
December 9, 2010
DD
DD
FN7586.1
2
2
C
C
2
C