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參數(shù)資料
| 型號(hào)： | RS5C321B |
| 廠商： | RICOH COMPANY LTD |
| 元件分類(lèi)： | XO, clock |
| 英文描述： | ULTRA-COMPACT SERIAL REAL-TIME CLOCK ICs WITH 32.768kHz |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封裝： | 0.65 MM PITCH, SSOP-8 |
| 文件頁(yè)數(shù)： | 9/33頁(yè) |
| 文件大?。?/td> | 252K |
| 代理商： | RS5C321B |
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RS5C321A/B
5
Symbol
Item
Pin name
Conditions
MIN.
TYP.
MAX.
Unit
V
IH
“H” input voltage
CE, SCLK/SCLK, SIO
0.8V
DD
V
DD
V
V
IL
“L” input voltage
CE, SCLK/SCLK, SIO
0
0.2V
DD
V
I
OH
“H” output current
SIO
V
OH
=V
DD
–0.5V
–0.5
mA
I
OL1
“L” output current
SIO
V
OL1
=0.5V
0.5
mA
I
OL2
32KOUT
V
OL2
=0.4V
1
R
DN
Pull-down resistance
CE
45
150
450
k
I
ILK
Input leakage current
SCLK/SCLK
V
I
=V
DD
or V
SS
–1
1
μA
I
OZ1
Output off-state
SIO
V
O
=V
DD
or V
SS
–2
2
μA
I
OZ2
leakage current
32KOUT
V
O
=10V
V
DD
=3V
–5
5
I
DD1
Standby current 1*
V
DD
0.6
1.5
μA
Input/Output: open
V
DD
=6V
Input/Output: open
I
DD2
Standby current 2*
V
DD
0.8
2.0
μA
C
D
Internal oscillation
capacitance
OSCOUT
10
pF
DC CHARACTERISTICS
Unless otherwise specified: V
SS
=0V, V
DD
=3V, Topt=–40 to +85C, Oscillation frequency=32.768kHz,(C
L
=6pF, R
1
=30k
), C
G
=10pF
AC CHARACTERISTICS
(V
SS
=0V, Topt=–40 to +85C, C
L
=50pF)
V
DD
≥
2.5V
Symbol
Item
V
DD
≥
4.5V
V
DD
≥
4.0V
Unit
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
t
CES
t
CEH
t
CR
t
SCK
t
CKH
t
CKL
t
CKS
CE set-up time
175
200
400
ns
CE hold time
175
200
400
ns
CE inactive time
350
400
800
ns
SCLK clock cycle time
350
400
800
ns
SCLK high time
175
200
400
ns
SCLK low time
175
200
400
ns
SCLK to CE set-up time
Data output start time (from rising
of SCLK) (from falling of SCLK)
Data output delay time (from rising
of SCLK) (from falling of SCLK)
60
80
120
ns
t
RE
120
135
300
ns
t
RR
120
135
300
ns
t
RZ
t
DS
t
DH
Output floating time
120
135
300
ns
Input data set-up time
50
60
120
ns
Input data hold time
50
50
80
ns
*
) I
DD1
, I
DD2
is specified when 32kHz output is off (CLEN=1)
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