ISL12022MIBZ-T Intersil, ISL12022MIBZ-T Datasheet - Page 18

• Manufacturer Part Number: ISL12022MIBZ-T
• Description: IC RTC/CALENDAR TEMP SENS 20SOIC
• Manufacturer: Intersil
• Type: Clock/Calendarr

Specifications of ISL12022MIBZ-T

• Memory Size: 128B
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ISL12022MIBZ-TCT

user. If an application requires adjustment of the
IATR bits outside the preset values, the user
should contact Intersil.
AGING AND INITIAL TRIM DIGITAL TRIMMING
BITS (IDTR0<1:0>)
These bits allow ±30.5ppm initial trimming range for the
crystal frequency. This is meant to be a coarse
adjustment if the range needed is outside that of the
IATR control. See Table 10. The IDTR0 register should
only be changed while the TSE (Temp Sense Enable) bit
is “0”.
The ISL12022M has a preset Initial Digital Trimming
value corresponding to the crystal in the module. This
value is recalled on initial power-up and is
READ-ONLY. It cannot be overwritten by the user.
AGING AND INITIAL ANALOG TRIMMING BITS
(IATR0<5:0>)
The Initial Analog Trimming Register allows +32ppm to
-31ppm adjustment in 1ppm/bit increments. This
enables fine frequency adjustment for trimming initial
crystal accuracy error or to correct for aging drift.
The ISL12022M has a preset Initial Analog Trimming
value corresponding to the crystal in the module. This
value is recalled on initial power-up, is preset in
device production and is READ-ONLY. It cannot be
overwritten by the user.
IATR05 IATR04 IATR03 IATR02 IATR01 IATR00
ADDR
0Bh
IDTR01
TABLE 11. INITIAL AT AND DT SETTING REGISTER
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
IDTR01 IDTR00 IATR05 IATR04 IATR03 IATR02 IATR01 IATR00
TABLE 10. IDTR0 TRIMMING RANGE
TABLE 12. IATRO TRIMMING RANGE
7
0
0
0
0
0
0
0
0
0
0
0
0
0
IDTR00
6
0
0
0
0
0
0
0
0
1
1
1
1
1
0
1
0
1
5
18
0
0
0
0
1
1
1
1
0
0
0
0
1
Default/Disabled
+30.5ppm
0ppm
-30.5ppm
4
TRIMMING RANGE
0
0
1
1
0
0
1
1
0
0
1
1
0
3
2
0
1
0
1
0
1
0
1
0
1
0
1
0
TRIMMING
1
RANGE
+32
ISL12022M
+31
+30
+29
+28
+27
+26
+25
+24
+23
+22
+21
+20
0
IATR05 IATR04 IATR03 IATR02 IATR01 IATR00
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
TABLE 12. IATRO TRIMMING RANGE (Continued)
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
TRIMMING
June 4, 2010
RANGE
FN6668.7
+19
+18
+17
+16
+15
+14
+13
+12
+11
+10
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28
-29
-30
-31
+9
+8
+7
+6
+5
+4
+3
+2
+1
-1
-2
-3
-4
-5
-6
-7
-8
-9
0