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RTC-65271 Datasheet(PDF) 2 Page - Epson ToYoCom

Part # RTC-65271
Description  Real time clock
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Manufacturer  EPSONTOYOCOM [Epson ToYoCom]
Direct Link  http://www.epsontoyocom.co.jp
Logo EPSONTOYOCOM - Epson ToYoCom

RTC-65271 Datasheet(HTML) 2 Page - Epson ToYoCom

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76
RTC部アドレスマップ
(VDD=5V±10%、GND=0V、Ta=−10∼+70℃)
■アドレスマップ
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
SECOND
SECOND ALARM
MINUTE
MINUTE ALARM
HOUR
HOUR ALARM
DAY OF WEEK
DAY OF MONTH
MONTH
YEAR
REGISTER A
REGISTER B
REGISTER C
REGISTER D
14 bytes
RTC
50 bytes
USER RAM
RTC DATA REGISTER
INDIRECT ADDRESS REG.
00
00
0D
0E
3F
3F
INDIRECT
ADDRESS
14 bytes
REAL TIME CLOCK
■バスタイミング
項    目
記 号
Min.
Max.
単位
サイクル時間
パルス幅RD/WRの“L”区間
信号立ち上がり/立ち下がり時間CS,RD,WR
アドレス保持時間
RD前のアドレスセットアップ時間
WR前のアドレスセットアップ時間
RD前のチップセレクトセットアップ時間
WR前のチップセレクトセットアップ時間
RD,WR後のチップセレクトホールド時間
リードデータ保持時間
ライトデータ保持時間
RDからの出力データ遅延時間
ライトデータセットアップ時間
tCYC
tRWL
tR,tF
tAH
tARS
tAWS
tCRS
tCWS
tCH
tDHR
tDHW
tDDR
tDSW
395
325
20
50
0
50
0
20
10
0
20
200
100
240
30
DC
ns
TCLOCK
TMODE
VDD
STBY
D0―D7
RD
WR
A0―A5
RTC
XRAM
BUS
INTERFACE
DATA/CONTROL
A0―A4
CE
VPP
POK
ON/OFF
OSC
SELECTOR
PERIODIC INTR /SQ WAVE SELECTOR
DIVIDER CHAIN
13 TAPS TO SELECTOR
CLOCK,CALENDAR AND ALARM
REGISTERS
REGISTERS
A,B,C,D
COLUMN DECODER,1 of8
50 BYTES USER RAM
ROW DECODER,1 of8
EXTENDED RAM PAGE REGISTER
COLUMN DECODER,1 of128
EXTENDED RAM
4096 BYTES
ROW DECODER,1 of32
CLOCK
CAL‐
ENDAR
UPDATE
SQW
RESET
IRQ
DV0‐DV2
4
10
3
3
1
I
N
D
E
X
R
E
G
I
S
T
E
R
D
E
C
O
D
E
R
RS0‐RS3
POWER
SWITCHING
REFERENSCE
拡張RAMアドレスマップ
XRAMPAGE REGISTER
ALIASES OF
PAGE REGISTER
00
1F
XRAM
20
21
3F
01 02
PAGE 00
PAGE 7F
128 PAGES
OF 32 bytes
EXTENDED RAM
A0∼A5
RTC
XRAM
WR
DATA BUS
WRITE
DATA
DATA BUS
READ
DATA
RD
tCYC
VALID
tF
tR
tF
tR
tCH
tRWL
tDSW
VALID
VALID
tCWS
tCH
tDDR
tCRS
tRWL
tARS
tDHR
tAH
(D0∼D7
(D0∼D7
tAWS
tAH
tDHW
■タイミングチャート
■回路構成図
Real time clock


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