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PCF2127AT/1 bảng dữ liệu(PDF) 16 Page - NXP Semiconductors

tên linh kiện PCF2127AT/1
Giải thích chi tiết về linh kiện  Integrated RTC, TCXO and quartz crystal
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nhà sản xuất  NXP [NXP Semiconductors]
Trang chủ  http://www.nxp.com
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PCF2127AT/1 bảng dữ liệu(HTML) 16 Page - NXP Semiconductors

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PCF2127A_2
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 7 May 2010
16 of 80
NXP Semiconductors
PCF2127A
Integrated RTC, TCXO and quartz crystal
8.5.5 Operation examples
8.5.5.1
Writing to the RAM
1. Set RAM address:
– Select register RAM_addr_MSB (send address 1Ah).
– Set value for bit RA8 (data byte of register 1Ah).
Note: register address will be incremented automatically to 1Bh.
– Set value for array RA[7:0] (data byte of register 1Bh).
2. Send RAM write command:
– Select register RAM_wrt_cmd (send address 1Ch).
3. Write data into the RAM:
– Write n data byte into RAM.
For details see Figure 44 on page 60.
8.5.5.2
Reading from the RAM
1. Set RAM address:
– Select register RAM_addr_MSB (send address 1Ah).
– Set value for bit RA8 (data byte of register 1Ah).
Note: register address will be incremented automatically to 1Bh.
– Set value for array RA[7:0] (data byte of register 1Bh).
2. Send RAM read command:
– Select register RAM_rd_cmd (send address 1Dh).
3. Read from the RAM:
– Read n data byte from the RAM.
For details see Figure 45 on page 61.



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