PCF2127T Ver la hoja de datos (PDF) - NXP Semiconductors.
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PCF2127T Datasheet PDF : 101 Pages
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NXP Semiconductors
PCF2127
Accurate RTC with integrated quartz crystal for industrial applications
8.5.1 Register RAM_addr_MSB
Table 19. RAM_addr_MSB - RAM address MSB register (address 1Ah) bit allocation
Bit positions labeled as - are not implemented and return 0 when read.
Bit
7
6
5
4
3
2
Symbol
-
-
-
-
-
-
Reset
-
-
-
-
-
-
value
1
0
-
RA8
-
0
Table 20. RAM_addr_MSB - RAM address MSB register (address 1Ah) bit description
Bit positions labeled as - are not implemented and return 0 when read.
Bit
Symbol
Description
7 to 1
-
unused
0
RA8
RAM address, MSB (9th bit)
8.5.2 Register RAM_addr_LSB
Table 21. RAM_addr_LSB - RAM address LSB register (address 1Bh) bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
RA[7:0]
Reset
value
0
0
0
0
0
0
0
0
Table 22.
Bit
7 to 0
RAM_addr_LSB - RAM address LSB register (address 1Bh) bit description
Symbol
Description
RA[7:0]
RAM address, LSB (1st to 8th bit)
8.5.3 Register RAM_wrt_cmd
Table 23. RAM_wrt_cmd - RAM write command register (address 1Ch) bit description
Bit
Symbol
Description
7 to 0
-
data to be written into RAM
8.5.4 Register RAM_rd_cmd
Table 24. RAM_rd_cmd - RAM read command register (address 1Dh) bit description
Bit
Symbol
Description
7 to 0
-
data to be read from RAM
PCF2127
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 19 December 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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