ISL12030IBZ-T Intersil, ISL12030IBZ-T Datasheet - Page 10

• Manufacturer Part Number: ISL12030IBZ-T
• Description: IC RTC/CALENDAR EEPROM 8-SOIC
• Manufacturer: Intersil
• Type: Clock/Calendar/NVSRAMr

Specifications of ISL12030IBZ-T

• Memory Size: 1K (128 x 8)
• Time Format: HH:MM:SS:hh (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: 8-SOIC (3.9mm Width)
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ISL12030IBZ-TTR

cleared to “0”, the alarm will operate in standard mode,
where the IRQ pin will be set LOW until both the
ALM0/ALM1 status bits are cleared to “0”.
ALARM 1 (ALE 1)
This bit enables the Alarm1 function. When ALE1 = “1”, a
match of the RTC section with the Alarm1 section will result
is setting the ALM1 status bit to “1” and the IRQ output LOW.
When set to “0”, the Alarm1 function is disabled.
ALARM 0 (ALE 0)
This bit enables the Alarm0 function. When ALE0 = 1, a
match of the RTC section with the Alarm1 section will result
is setting the ALM0 status bit to “1” and the IRQ output LOW.
When set to “0”, the Alarm0 function is disabled.
AC Register (AC)
Address [13h]
This register sets the parameters for the AC input.
AC 50/60HZ INPUT SELECT (AC5060)
This bit selects either 50Hz or 60Hz powerline AC clock
input frequency. Setting this bit to “0” selects a 60Hz input
(default). Setting this bit to “1” selects a 50Hz input.
DST Control Registers (DSTCR)
Address [15h to 1Ch]
8 bytes of control registers have been assigned for the
Daylight Savings Time (DST) functions. DST beginning (set
Forward) time is controlled by the registers DstMoFd,
DstDwFd, DstDtFd, and DstHrFd. DST ending time (set
Backward or Reverse) is controlled by DstMoRv, DstDwRv,
DstDtRv and DstHrRv.
Tables 5 and 6 describe the structure and functions of the
DSTCR.
DST FORWARD REGISTERS (15H TO 18H)
DSTE is the DST Enabling Bit located in bit 7 of register 15h
(DstMoFdxx). Set DSTE = 1 will enable the DSTE function.
Upon powering up for the first time, the DSTE bit defaults to
“0”.
DST forward is controlled by the following DST Registers:
DstMoFd sets the Month that DST starts. The default value
for the DST begin month is April (04h)
DstDwFd sets the Week and the Day of the Week that DST
starts. DstDwFdE sets the priority of the Day of the Week
over the Date. For DstDwFdE=1, Day of the week is the
priority. Note that Day of the week counts from 0 to 6, like the
RTC registers. The default for the DST Forward Day of the
Week is Sunday (00h).
ADDR
13h
AC5060
7
TABLE 4. AC REGISTER
X
6
5
X
10
4
X
.
X
3
X
2
X
1
X
0
ISL12030
WkFd controls the week of the month that the DST starts.
When the day of week option is selected, the WkFd entry set
the week in the month and the DwFd selects the day of the
week. The range for WdFd is 1 to 5 and 7 with 7 being the
last week. Default is 0 (OFF).
DstDtfd controls which Date DST begins. The default value
for DST forward date is on the first date of the month (01h).
DstDtFd is only effective if DwFdE = 0.
DstHrFd controls the hour that DST begins. It includes the
MIL bit, which is in the corresponding RTC register. The RTC
hour and DstHrFd registers need to match formats (Military
or AM/PM) in order for the DST function to work. The default
value for DST hour is 2:00AM (02h). The time is advanced
from 2:00:00AM to 3:00:00AM for this setting.
DST REVERSE REGISTERS (19H TO 1CH)
DST end (reverse) is controlled by the following DST
Registers:
DstMoRv sets the Month that DST ends. The default value
for the DST end month is October (10h).
DstDwRv controls the Week and the Day of the Week that
DST should end. The DwRvE bit sets the priority of the Day of
the Week over the Date. For DwRvE = 1, Day of the week is
the priority. Note that Day of the week counts from 0 to 6, like
the RTC registers. The default for DST DwRv end is Sunday
(00h).
WkRv controls the week of the month that the DST starts.
When the day of week option is selected, the WkRv entry set
the week in the month and the DwRv selects the day of the
week. The range for WdRv is 1 to 5 and 7 with 7 being the
last week. Default is 0 (OFF)
DstDtRv controls which Date DST ends. The default value
for DST Date Reverse is on the first date of the month. The
DstDtRv is only effective if the DwRvE = 0.
DstHrRv controls the hour that DST ends. It includes the MIL
bit, which is in the corresponding RTC register. The RTC
hour and DstHrRv registers need to match formats (Military
or AM/PM) in order for the DST function to work. The default
value sets the DST end at 2:00AM. The time is set back from
2:00:00AM to 1:00:00AM for this setting.
January 15, 2008
FN6617.1