PMC

Pm25LV512/010

 

 

DEVICE OPERATION

The Pm25LV512/010 is designed to interface directly with the synchronous serial peripheral interface (SPI) of the 6800 type series of microcontrollers.

The Pm25LV512/010 utilizes an 8-bit instruction register. The list of instructions and their operation codes are contained in Table 1. All instructions, addresses, and data are transferred with the MSB first and start with a high- to-low transition.

Write is defined as program and/or erase in this specification. The following commands, PAGE PROGRAM, SECTOR ERASE, BLOCK ERASE, CHIP ERASE, and WRSR are write instructions for Pm25LV512/010.

Table 1. Instruction Set for the Pm25LV512/010

Instruction Name

Instruction Format

Hex Code

Operation

 

 

 

 

WREN

0000 0110

06h

Set Write Enable Latch

 

 

 

 

WRDI

0000 0100

04h

Reset Write Enable Latch

 

 

 

 

RDSR

0000 0101

05h

Read Status register

 

 

 

 

WRSR

0000 0001

01h

Write Status Register

 

 

 

 

READ

0000 0011

03h

Read Data from Memory Arrary

 

 

 

 

FAST_READ

0000 1011

0Bh

Read Data from Memory at Higher Speed

 

 

 

 

PG_ PROG

0000 0010

02h

Program Data Into Memory Array

 

 

 

 

SECTOR_ERASE

1101 0111

D7h

Erase One Sector in Memory Array

 

 

 

 

BLOCK_ERASE

1101 1000

D8h

Erase One Block in Memory Array

 

 

 

 

CHIP_ERASE

1100 0111

C7h

Erase Entire Memory Array

 

 

 

 

RDID

1010 1011

ABh

Read Manufacturer and Product ID

 

 

 

 

READ PRODUCT ID (RDID): The RDID instruction allows the user to read the manufacturer and product ID of the device. The instruction code is followed by three dummy bytes, each bit being latched-in on Serial Data Input (SI) during the rising edge of Serial Clock (SCK). Then the first manufacturer ID (9Dh) is shifted out on Serial Data Output (SO), followed by the device ID (7Bh = Pm25LV512; 7Ch = Pm25LV010) and the second manufacturer ID (7Fh), each bit been shifted out during the falling edge of Serial Clock (SCK).

Table 2. Product Identification

Product Identification

Data

 

 

Manufacturer ID

9Dh

 

 

Device ID:

 

 

 

Pm25LV512

7Bh

 

 

Pm25LV010

7Ch

 

 

Programmable Microelectronics Corp.

7

Issue Date: February, 2004, Rev: 1.4

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PMC-Sierra Pm25LV010 Device Operation, Product Identification Data, Instruction Name Instruction Format Hex Code Operation
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Pm25LV512, Pm25LV010 specifications

PMC-Sierra is renowned for its high-performance semiconductor solutions, and the PM25LV010 and PM25LV512 are standout products in their lineup of serial NOR flash memory devices. These memory chips are specifically designed for a range of applications that include networking, storage, and consumer electronics, providing reliable performance and efficient data storage.

The PM25LV010 offers 1 megabit of storage capacity, while the PM25LV512 provides 512 kilobits. Both devices feature a simple serial interface that allows for quick and easy connections to various microcontrollers and digital signal processors. This makes them particularly attractive for systems that require fast access to stored data and simplified design architecture.

One of the primary features of the PM25LV010 and PM25LV512 is their high-speed read capability. With access times as low as 45 nanoseconds, these chips enable rapid data retrieval, ensuring that systems can operate effectively without bottlenecks caused by slow memory access. This is particularly crucial in applications where real-time data processing is essential, such as in communications systems or digital signal processing.

In terms of technology, both devices utilize advanced CMOS manufacturing processes that enhance their reliability and performance. They offer flexibility in programming and erasing, with full chip erase functionality and the ability to program data on a page basis. This allows for efficient updates to the stored information without the need to erase large sections of memory.

Power efficiency is another critical aspect of the PM25LV010 and PM25LV512. These devices consume very little power during both active and standby modes, making them suitable for battery-operated devices and energy-sensitive applications. Their low power consumption ensures extended operation time, which is a significant advantage in portable consumer electronics.

Additionally, both chips are designed with robust security features that aid in protecting sensitive data from unauthorized access. They support a variety of locking and protection mechanisms, ensuring that critical information remains confidential.

In summary, the PMC-Sierra PM25LV010 and PM25LV512 serial NOR flash memory devices merge high-speed performance, low power consumption, and advanced security, making them excellent choices for diverse applications in the modern digital landscape. Their design and technology cater to the growing demand for efficient, reliable, and secure memory solutions in today's rapidly evolving electronic ecosystems.
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