25LC160D-E/P

Overview

The Microchip Technology 25LC160D-E/P is a 16 Kbit Serial Electrically Erasable PROM featuring SPI-compatible serial bus access. It utilizes a 2048 x 8-bit organization with a 32-byte page size for the 'D' version devices. The component operates within a voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 10 MHz at 4.5V ≤ VCC ≤ 5.5V. It is housed in an 8-lead PDIP package and functions across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports high-speed serial communication via SPI interface with up to 10 MHz clock frequency
• Includes built-in write protection mechanisms such as power-on/off data protection and hardware write-protect pin
• Features self-timed erase and write cycles with internal write cycle time of 5 ms maximum
• Provides block write protection allowing selection of none, 1/4, 1/2 or all array segments

Applications

• Microcontroller system memory storage
• Data logging applications requiring non-volatile storage
• Configuration parameter storage in embedded systems

Procurement Notes

Verify the specific suffix '-E/P' corresponds to the Industrial temperature grade (-40°C to +85°C) and PDIP package type. Confirm that the 'D' designation indicates the 32-byte page size rather than the 16-byte variant found in 'C' versions. Ensure compatibility with the required SPI voltage levels and check for any specific RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this part when a 16 Kbit capacity with 32-byte page write capability is needed. The Industrial temperature grade suits general-purpose electronics operating between -40°C and +85°C. Consider the 8-pin PDIP package for through-hole mounting requirements. Verify that the host microcontroller supports the SPI protocol and can handle the required voltage levels between 2.5V and 5.5V.

Part Context

This device belongs to the 25XX160C/D family of 16 Kbit Serial EEPROMs from Microchip Technology. The 'LC' prefix denotes the 2.5V to 5.5V supply voltage range, distinguishing it from the 'AA' series which supports lower voltages down to 1.8V. The 'D' suffix specifically identifies the 32-byte page size architecture, whereas 'C' variants use 16-byte pages. This family is designed for direct interfacing with popular microcontroller families.

Replacement Considerations

Public confirmed substitute part numbers: 25LC160C-E/P (16-byte page), 25LC160-I/P (older revision).

FAQ

What is the difference between the 25LC160C and 25LC160D versions?

The primary difference is the page size. The 25LC160C has a 16-byte page size, while the 25LC160D has a 32-byte page size. Both share the same 16 Kbit capacity and electrical characteristics.

How does the HOLD pin function during operation?

The HOLD pin allows the user to pause serial communication without resetting the sequence. When pulled low while SCK is low, the SO pin goes high-impedance and input transitions are ignored until HOLD is released.