Overview
The DS1302ZN+T&R is a real-time clock (RTC) integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This component is designed to provide accurate timekeeping and calendar functions, making it a crucial element in various electronic systems. The DS1302ZN+T&R is the successor to the DS1202 and includes additional features such as dual power pins for primary and backup power supplies, a programmable trickle charger, and seven additional bytes of scratchpad memory. It operates on very low power, extending battery backup run time, and supports a wide range of applications due to its industrial temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Description |
|---|---|
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Memory Size | 31 bytes |
| Interface | 3-Wire Serial |
| Type | Clock/Calendar |
| Operating Temperature | -40°C ~ 85°C |
| Voltage - Supply | 2V ~ 5.5V |
| Time Format | HH:MM:SS (12/24 hr) |
| Date Format | YY-MM-DD-dd |
| Current - Timekeeping (Max) | 0.3µA ~ 1µA @ 2V ~ 5V |
Key Features
- Completely manages all timekeeping functions, including seconds, minutes, hours, date of the month, month, day of the week, and year with leap-year compensation valid up to 2100.
- 31 bytes of static RAM for data storage.
- Simple 3-wire serial interface (CE, I/O, and SCLK) for communication with microprocessors.
- Supports single-byte or multiple-byte (burst mode) data transfer.
- Dual power pins for primary and backup power supplies.
- Programmable trickle charger for VCC1.
- Low power operation, using less than 1µW to retain data and clock information.
- Optional industrial temperature range: -40°C to +85°C.
- Underwriters Laboratories (UL) recognized.
Applications
The DS1302ZN+T&R is versatile and can be used in a wide range of applications, including:
- Embedded systems requiring accurate timekeeping.
- Industrial control systems.
- Medical devices.
- Automotive systems.
- Consumer electronics, such as clocks, timers, and calendar devices.
Q & A
- What is the DS1302ZN+T&R?
The DS1302ZN+T&R is a real-time clock (RTC) integrated circuit that provides accurate timekeeping and calendar functions.
- Who manufactures the DS1302ZN+T&R?
The DS1302ZN+T&R is manufactured by Analog Devices Inc./Maxim Integrated.
- What is the operating temperature range of the DS1302ZN+T&R?
The operating temperature range is -40°C to +85°C.
- What type of interface does the DS1302ZN+T&R use?
The DS1302ZN+T&R uses a 3-wire serial interface.
- How much power does the DS1302ZN+T&R consume during timekeeping?
The DS1302ZN+T&R consumes less than 1µA during timekeeping.
- Does the DS1302ZN+T&R support both 12-hour and 24-hour formats?
- What is the memory size of the DS1302ZN+T&R?
The DS1302ZN+T&R has 31 bytes of static RAM.
- Is the DS1302ZN+T&R RoHS compliant?
No, the DS1302ZN+T&R is not RoHS compliant.
- How does the DS1302ZN+T&R handle leap years?
The DS1302ZN+T&R automatically adjusts for leap years and months with fewer than 31 days.
- What is the purpose of the trickle charger in the DS1302ZN+T&R?
The trickle charger helps to maintain the battery backup power supply, extending the battery life.
