PCA8802U/2AA/1,026 NXP Semiconductors, PCA8802U/2AA/1,026 Datasheet - Page 9
![no-image](/images/manufacturer_photos/0/4/487/nxp_semiconductors_sml.jpg)
PCA8802U/2AA/1,026
Manufacturer Part Number
PCA8802U/2AA/1,026
Description
Real Time Clock ultra LOW POWER OSC Smartcard RTC
Manufacturer
NXP Semiconductors
Datasheet
1.PCA8802U2AA1026.pdf
(34 pages)
Specifications of PCA8802U/2AA/1,026
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
935288535026
NXP Semiconductors
PCA8802_1
Product data sheet
Fig 11. Reading protocol
reading multiple data parameters
S
S
A
Rd_cmd is slave address plus read bit.
START condition
acknowledge from master
9.5.1.2 The reading protocol
9.5.1.3 Reading and writing limitations
rd_cmd
The reading protocol is shown in
As the counter is frozen during interface accesses, all access must be completed within
32 seconds (see
A
Fig 10. Writing protocol
Fig 12. Access restrictions
1
P
st
parameter
writing 2 consecutive instructions
writing 2 consecutive instructions with instruction parameters
STOP condition
S
S
S
Wrt_cmd is slave address plus write bit.
Wrt_cmd is slave address plus write bit.
Rd_cmd is slave address plus read bit.
START condition
wrt_cmd
wrt_cmd
A
Figure
2
nd
parameter
Rev. 01 — 19 February 2009
A
A
S
S
A
P
12). If this rule is not adhered to, then counts will be dropped.
acknowledge from slave
not acknowledge from master
A
A
P
START condition
acknowledge from slave
STOP condition
wrt_cmd/
STOP condition
rd_cmd
A
instruction
instruction
3
rd
Figure
parameter
A
11.
instr. parameter 3
A
A
A
A
must be < 32 seconds
instruction transfer
acknowledge from slave
4
instr. parameter 1
th
parameter
instruction
A
A
001aaj205
A
A
instruction
instr. parameter 2
n
P
P
th
parameter
PCA8802
© NXP B.V. 2009. All rights reserved.
Smartcard RTC
A
001aaj207
A
001aaj213
A
P
P
9 of 34