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参数资料
| 型号： | RTC-4574NBB-3 |
| 厂商： | EPSON TOYOCOM CORP |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | REAL TIME CLOCK, PDSO22 |
| 封装： | SON-22 |
| 文件页数： | 2/3页 |
| 文件大小： | 273K |
| 代理商： | RTC-4574NBB-3 |
83
Real time clock module
84
Real time clock module
Register table
Address
Register symbol
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
0
Sec
fos
S 40
S 20
S 10
S 8
S 4
S 2
S 1
1
Min
fr
Min 40
Min 20
Min 10
Min 8
Min 4
Min 2
Min 1
2
Hour
fr
0
Hour 20
Hour 10
Hour 8
Hour 4
Hour 2
Hour 1
3
Day of Week
fr
W 6
W 5
W 4
W 3
W 2
W 1
W 0
4
Day
fr
0
Day 20
Day 10
Day 8
Day 4
Day 2
Day 1
5
Month
fr
0
Month 10
Month 8
Month 4
Month 2
Month 1
6
Year
Year 80
Year 40
Year 20
Year 10
Year 8
Year 4
Year 2
Year 1
7
Minutes Alarm
AE
A-Min 40
A-Min 20
A-Min 10
A-Min 8
A-Min 4
A-Min 2
A-Min 1
8
Hours Alarm
AE
A-Hr20
A-Hr10
A-Hr8
A-Hr4
A-Hr2
A-Hr1
9
Week Alarm
AE
A-W 6
A-W 5
A-W 4
A-W 3
A-W 2
A-W 1
A-W 0
A
Day Alarm
AE
A-Day 20
A-Day 10
A-Day 8
A-Day 4
A-Day 2
A-Day 1
B
FOUT control
FE
FD4
FD3
FD2
FD1
FD0
C
Timer interrupt control
TE
TD1
TD0
D
Count Down Timer
Timer 128
Timer 64
Timer 32
Timer 16
Timer 8
Timer 4
Timer 2
Timer 1
E
Control 1
0
TI / TP
AF
TF
AIE
TIE
F
Control 2
0
TEST
STOP
RESET
HOLD
0
AC characteristics
(GND = 0 V, Ta = -40 °C to +85 °C)
Item
Symbol Control
VDD= 3.0V ± 10 % VDD= 5.0V ± 10 %
Unit
Min. Max. Min. Max.
CLK clock cycle
tCLK
–
800
–
350
–
ns
CLK H Pulse Width
tWH
400
175
CLK L Pulse Width
tWL
CE setup time
tCS
CE hold time
tCH
CE recovery time
tCR
600
300
Write data setup time
tDS
100
50
Write data hold time
tDH
80
Write data disable delay time tWZ
0
Read data delay time
tRD CL = 50 pF
–
300
–
120
Output disable time
tRZ C
L
= 50 pF
RL = 10 kΩ
200
100
Rise and fall time
tRF
–
100
50
FOUT duty ratio
(32.768 kHz output)
Duty
35
65
40
60
%
Timing chart
tCH
tRF
tWL
tCLK
tDS tDH
D0
D1
D6
D7
D0
D6
D7
D0
D1
D6 D7
D0
D6
D7
tWZ
tRD
tRZ
tWH
tCS
tCR
CE
CLK
DATA
Data Read
DATA
Data Write
50 %
10 %
90 %
(Write data)
(Read data)
From here the DATA pin turns into the output mode.
(Setup code, setup address)
10 %
Block diagram
Bus interface circuit
Output controller
Divider
FOUT
TIRQ
AIRQ
DATA
CLK
FCON
CE1
CE0
Clock and Calendar
Timer register
Alarm register
Control register
Shift register
Interrupts controller
OSC
32.768 kHz
Control line
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RTC-4574SA | 制造商:Epson Toyocom Corporation 功能描述:32.768kHz 0.5uA@3ViTyp.j 10.1~5.0~3.2mm +85 -40 5}23ppm@+25/3.0V 10.1mm 5mm 3.2mm Cut Tape 制造商:Epson Toyocom 功能描述:RTC module,3Wire Serial,Alarm,SOP14 |
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