AD5273
OTP PROGRAMMED AT MS
VDD = 5.5V
VA = 5.5V
RAB = 10k⍀
VW = 1V/DIV
1V
5V
VDD = 5V/DIV
5s
TPC 25. Power-Up Settling Time, after Fuses Blown
10
RAB = 1k⍀
VA = VB = OPEN
TA = 25؇C
1.0
RAB = 10k⍀
RAB = 50k⍀
0.1
RAB = 100k⍀
0.01
0
8
16
24
32
40
48
56 64
CODE – Decimal
TPC 26. IWB_MAX vs. Code
t8
t9
t6
SCL
t2
t3
t4
t5
t9
t7
t8
SDA
t1
P
S
Figure 1. Interface Timing Diagram
t10
P
Table I. SDA Write Mode Bit Format
S 0 1 0 1 1 0 A0 0 A T X X X X X X X A X X D5 D4 D3 D2 D1 D0 A P
SLAVE ADDRESS BYTE
INSTRUCTION BYTE
DATA BYTE
Table II. SDA Read Mode Bit Format
S 0 1 0 1 1 0 A0 1 A E1 E0 D5 D4 D3 D2 D1 D0 A P
SLAVE ADDRESS BYTE
DATA BYTE
SDA BITS DEFINITIONS AND DESCRIPTIONS
S = Start Condition
P = Stop Condition
A = Acknowledge
X = Don’t Care
T = OTP Programming Bit. Logic 1 programs wiper position
permanently.
D5, D4, D3, D2, D1, D0 = Data Bits
E1, E0 = OTP Validation Bits
0, 0 = Ready to Program
0, 1 = Test Fuse not Blown Successfully. (Check Setup.)
1, 0 = Fatal Error. Retry.
1, 1 = Programmed Successfully. No Further Adjustments
Possible.
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REV. 0