Date Format
:
Time Format
: HH:MM:SS
Supply Voltage - Max
: 5.5 V
Maximum Operating Temperature
: + 85 C
Minimum Operating Temperature
: - 40 C
Mounting Style
: SMD/SMT
Packaging
: Reel
Function
: Clock, Calendar, Alarm, Timer Interrupt
RTC Memory Size
: 16 B
RTC Bus Interface
: Parallel
Supply Voltage - Min
: 4.5 V
Package / Case
: SOIC-28
Pinout
DescriptionThe BQ4845YS-A4NTR is one member of the BQ4845 family which designed as one kind of parallel RTC with CPU supervisor that integrates a time-of-day clock, a 100-year calendar, and a CPU supervisor in a 28-pin SOIC or DIP.It provides direct connections for a 32.768KHz quartz crystal and a 3V backup battery and BQ4845YS-A4NTR contains a temperature-compensated reference and comparator circuit that monitors the status of its voltage supply.
Features of the BQ4845YS-A4NTR are:(1)real-time clock counts seconds through years in BCD format;(2)on-chip battery-backup switchover circuit with nonvolatile control for external SRAM;(3)less than 500nA of clock operation current in backup mode;(4)microprocessor reset valid to VCC=VSS;(5)indepen-dent watchdog timer with a programmable time-out period;(6)power-fail interrupt warning;(7)programmable clock alarm interrupt active in battery-backup mode;(8)programmable periodic interrupt;(9)battery-low warning.
The absolute maximum ratings of the BQ4845YS-A4NTR can be summarized as:(1)DC voltage applied on VCC relative to VSS:-0.3 to 7.0 V;(2)DC voltage applied on any pin excluding VCC relative to VSS:-0.3 to 7.0 V;(3)operating temperature:0 to +70°C(commercial) or -40 to +85°C(industrial);(4)storage temperature:-55 to +125 °C;(5)temperature under bias:-40 to +85 °C;(6)soldering temperature:+260 °C for 10 seconds.If you want to know more inform-ation such as the electrical characteristics about the BQ4845YS-A4NTR,please download the datasheet in www.seekic.com or www.chinaicmart.com .
Parameters: | Technical/Catalog Information | BQ4845YS-A4NTR |
| Vendor | Texas Instruments |
| Category | Integrated Circuits (ICs) |
| Date Format | YY-MM-DD-dd |
| Time Format | HH:MM:SS (12/24 hr) |
| Voltage - Supply | 4.5 V ~ 5.5 V |
| Interface | Parallel |
| Memory Size | - |
| Package / Case | 28-SOIC (7.5mm Width) |
| Packaging | Tape & Reel (TR) |
| Type | Clock/Calendar/Supervisor |
| Operating Temperature | -40°C ~ 85°C |
| Drawing Number | 296; 4040000-6; DW; 28 |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | BQ4845YS A4NTR
BQ4845YSA4NTR
|
BQ4845YS-A4NTR Data Sheet
