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參數(shù)資料
| 型號(hào)： | M41T83RM6E |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封裝： | 0.150 INCH, ROHS COMPLIANT, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 30/61頁 |
| 文件大?。?/td> | 983K |
| 代理商： | M41T83RM6E |
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Clock operation
M41T82-M41T83
Doc ID 12578 Rev 12
When the timer is in the free-running mode, with a value of n programmed into the timer
countdown value, the output will nominally be low for one cycle of the specified clock source
and high for n-1 cycles with an overal period of n cycles. Thus, the countdown period is
n/source clock frequency.
For the special case of n = 1, as shown in Table 11, when the clock source is 4096 or 64 Hz,
the low time (TL) is half the clock period instead of a full clock period.
Figure 21.
Timer output waveform in free-running mode (with TI/TP = 1)
Table 10.
Timer control register map(1)
1.
Bit positions labeled with 0 should always be written with logic 0.
Addr
D7
D6
D5
D4
D3
D2
D1
D0
Function
0Fh
WDF
AF1
AF2
BL
TF
OF
0
Flags
10h
Timer countdown value(2)
2.
Writing to the timer register will not reset the TF bit nor clear the interrupt.
Timer value
11h
TE
TI/TP
TIE
0
TD1
TD0
Timer control
Table 11.
Timer interrupt operation in free-running mode (with TI/TP = 1)
Source clock (Hz)
IRQ low time – TL (seconds)
(1)
1.
IRQ1/FT/OUT is asserted coincident with TF going true.
IRQ period – TIRQ (seconds)
n = 1(2)
2.
n = loaded countdown timer value (0 < n < 255). The timer is stopped when n = 0.
n > 1
n = 1
n > 1
4096
1/8192 = 122 s 1/4096 = 244 s
1/4096 = 244 s
n / 4096
64
1/128 = 7.8 ms
1/64 = 15.6 ms
n / 64
11/64
1/641
n
1/60
1/64
1 minute
n minutes
TL
AM03012v1
IRQ1/FT/OUT
TIRQ
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相關(guān)代理商/技術(shù)參數(shù) |
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| M41T83RM6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
| M41T83RMY6E | 功能描述:實(shí)時(shí)時(shí)鐘 Serial I2C bus RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T83RMY6F | 功能描述:實(shí)時(shí)時(shí)鐘 Serial I2C bus RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T83RQ6E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
| M41T83RQ6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
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