Rainbow-electronics AT25F2048 Uživatelský manuál

1Features• Serial Peripheral Interface (SPI) Compatible• Supports SPI Modes 0 (0,0) and 3 (1,1)• 20 MHz Clock Rate• Byte Mode and 256-byte Page Mode f

10AT25F20482455D–SEEPR–7/04A single PROGRAM instruction programs 1 to 256 consecutive bytes within a page if itis not write protected. The starting by

11AT25F20482455D–SEEPR–7/04Timing Diagrams (for SPI Mode 0 (0, 0))Synchronous Data TimingWREN TimingWRDI TimingSOVOHVOLHI-ZHI-ZtVVALID INSIVIHVILtHtSU

12AT25F20482455D–SEEPR–7/04RDSR TimingWRSR TimingREAD TimingCSSCK01234567891011121314SIINSTRUCTIONSO76543210DATA OUTMSBHIGH IMPEDANCE15CSSISCKHIGH IMP

13AT25F20482455D–SEEPR–7/04PROGRAM TimingHOLD TimingSECTOR ERASE TimingCSSCKSISO3-BYTE ADDRESS1st BYTE DATA-IN256th BYTE DATA-ININSTRUCTIONHIGH IMPEDA

14AT25F20482455D–SEEPR–7/04CHIP ERASE TimingRDID TimingXX = Don’t Care bit12 13 14 15 16 17 18 19XMANUFACTURERCODE (ATMEL)DEVICE CODE

15AT25F20482455D–SEEPR–7/04Ordering InformationOrdering Code Package Operation RangeAT25F2048N-10SU-2.7 8S1 Industrial(-40°C to 85°C)Package Type8S1 8

16AT25F20482455D–SEEPR–7/04Package Information8S1 – JEDEC SOIC1150 E. Cheyenne Mtn. Blvd.Colorado Springs, CO 80906TITLEDRAWING NO.RREV. Note:10/7/0

Printed on recycled paper.2455D–SEEPR–7/04Disclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly con

2AT25F20482455D–SEEPR–7/04The AT25F2048 is enabled through the Chip Select pin (CS) and accessed via a 3-wireinterface consisting of Serial Data Input

3AT25F20482455D–SEEPR–7/04Note: 1. This parameter is characterized and is not 100% tested.Note: 1. VIL and VIH max are reference only and are not test

4AT25F20482455D–SEEPR–7/04Notes: 1. The programming time for n bytes will be equal to n x tBPC.2. This parameter is characterized at 3.0V, 25°C and is

5AT25F20482455D–SEEPR–7/04Serial Interface DescriptionMASTER: The device that generates the serial clock.SLAVE: Because the Serial Clock pin (SCK) is

6AT25F20482455D–SEEPR–7/04SPI Serial InterfaceMASTER:MICROCONTROLLERSLAVE:AT25F2048DATA OUT (MOSI)DATA IN (MISO)SERIAL CLOCK (SPI CK)SS0SS1SS2SS3SISOS

7AT25F20482455D–SEEPR–7/04Functional DescriptionThe AT25F2048 is designed to interface directly with the synchronous serial peripheralinterface (SPI)

8AT25F20482455D–SEEPR–7/04READ PRODUCT ID (RDID): The RDID instruction allows the user to read the manufac-turer and product ID of the device. The fir

9AT25F20482455D–SEEPR–7/04The WRSR instruction also allows the user to enable or disable the Write Protect (WP)pin through the use of the Write Protec