X9418
XFR Wiper Counter Register (WCR) to Data Register (DR)
S device type
device
T identifier
addresses
A
R 0 1 0 1 A A A A
3 2 1 0
T
instruction DR and WCR
S
opcode
addresses
A
C
R R
P
1 1 1 0
0
K
1 0
0
S
A
C
K
S
T
O
P
HIGH-VOLTAGE
WRITE CYCLE
Increment/Decrement Wiper Counter Register (WCR)
S device type
device
T
identifier
addresses
A
R 0 1 0 1 A A A A
3 2 1 0
T
instruction
WCR
S
opcode
addresses
A
C
P
K 0 0 1 0 0 0 0 0
increment/decrement
S
(sent by master on SDA)
A
C I/ I/
I/ I/
K D D . . . . D D
S
T
O
P
Global XFR Data Register (DR) to Wiper Counter Register (WCR)
device
S device type
identifier
addresses
T
A
R 0 1 0 1 A A A A
3 2 1 0
T
instruction
DR
S
opcode
addresses
A
C
R R
0 0 0 1
0 0
K
1 0
S
A
C
K
S
T
O
P
Global XFR Wiper Counter Register (WCR) to Data Register (DR)
S device type
device
T identifier
addresses
A
R 0 1 0 1 A A A A
3 2 1 0
T
instruction
DR
S
opcode
addresses
A
C
R R
1 0 0 0
0 0
K
1 0
S
A
C
K
S
T
O
P
HIGH-VOLTAGE
WRITE CYCLE
SYMBOL TABLE
Guidelines for Calculating Typical Values of Bus
Pull-Up Resistors
INPUTS
Must be
steady
May change
from Low to
High
May change
from High to
Low
Don’t Care:
Changes
Allowed
N/A
OUTPUTS
Will be
steady
Will change
from Low to
High
Will change
from High to
Low
Changing:
State Not
Known
Center Line
is High
Impedance
120
100
Resistance (K)
80
60
40
20 Min.
Resistance
0
0 20 40 60
V
R
MIN
=
CC MAX
=1.8KΩ
I
OL MIN
R
MAX
=
t
R
C
BUS
WAVEFORM
Max.
Resistance
80 100 120
Bus Capacitance (pF)
REV 1.1.5 7/23/02
www.xicor.com
Characteristics subject to change without notice.
10 of 21
XICOR [ XICOR INC. ]
