rtc-4553ac Epson Electronics America, Inc., rtc-4553ac Datasheet - Page 22

• Manufacturer Part Number: rtc-4553ac
• Description: Real Time Clock Module
• Manufacturer: Epson Electronics America, Inc.

RTC – 4553AC
(3) Time/calendar continuous write example (CNTR=0)
(4) SRAM data write example
S
S
S
S
S
S
CSo
SCK
CSo
SCK
WR
WR
S
S
IN
OUT
IN
OUT
The write result appears at S
therefore necessary to specify another read or write operation. (When using write access, note that the data of
that address will be further incremented by 1.)
For continuous write operations, the CS0 must be kept "L" for the required number of increments (+1).
The write result appears at S
therefore necessary to specify another read or write operation.
S
OUT
OUT
IN
IN
IN
data are valid only during SRAM write access.
: Input at leading edge of SCK
: Output at trailing edge of SCK
: Input at leading edge of SCK
: Output at trailing edge of SCK
: Undefined
Don't care
: Undefined
Don't care
A0 A1 A2 A3
A*
SRAM address
Address
Address
Previously accessed address
Previously accessed address and data
Access 1 (1-second digit)
A*
(0000)
OUT
OUT
A*
and data
when specifying the next access. When wanting to check the write result, it is
when specifying the next access. When wanting to check the write result, it is
A*
Don't care
Data
D0 D1
D*
Data to be written
Page - 19
D*
(1111)
D2
D*
Address
Address
1-second digit contents + 1
Access 2 (10-second digit)
D3
D*
A0 A1 A2 A3
a0
SRAM address
Don't care
a1
(0000)
Next SRAM address (0001)
Data
a2
a3
D0 D1 D2 D3
d0
Data to be written
Address
Address
to SRAM (1111)
10-second digit contents + 1
Access 3 (1-minute digit)
d1
d2
d3
Don't care
Data
MQ - 342 - 01