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參數(shù)資料
| 型號： | RF5C62 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | REAL-TIME CLOCK |
| 中文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
| 封裝： | SOP-18 |
| 文件頁數(shù)： | 45/48頁 |
| 文件大小： | 419K |
| 代理商： | RF5C62 |
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Question 1:What is the difference between backup current consumption and standby current con-
sumption
Question 2:How is it possible to know typical backup current consumption and temperature character-
istics in determining the battery capacity
Question 3:What is the cause of partial mismatching of AC timing with the high-speed CPU
Question 4:Is it possible to extend the operating temperature range of –20C to +70C
RP/RF/RS5C62
41
Answer 1: Backup current consumption is defined as current consumption in battery backup with the CE
pin held low (connected to the V
SS
input) and the other pins opened (the term “opened” also
refers to “impressed with intermediate voltage”). On the other hand, standby current consump-
tion is defined as current consumption in the absence of access from the CPU with the CE and
CS pins held high (connected to the V
DD
pin input) and the other input pins connected to the
V
DD
or V
SS
pin input and the other output pins opened. The V
DD
pin input is set to 2.5V for
backup current consumption and 5.5V for standby current consumption.
Answer 2:For typical backup current consumption and temperature characteristics, see the graphs in 10. 1
to 10.4 in “10. Typical Characteristics”.
Answer 3:AC timing is designed to secure margins including variations and therefore difficult to change in
principle, provided that it is susceptible to change, as the case may be, upon request.
Answer 4:As in Answer 3 above, the operating temperature range is difficult to change in principle, provid-
ed that it is susceptible to change, as the case may be, upon request.
Category
Questions and Answers
4) AC/DC
electric
character-
istics and
others
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