參數(shù)資料
型號(hào)： S-35390A-T8T1
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： REAL TIME CLOCK, PDSO8
封裝： TSSOP-8
文件頁(yè)數(shù)： 31/48頁(yè)
文件大?。?/td> 542K
代理商： S-35390A-T8T1
S1C88816 TECHNICAL MANUAL
EPSON
29
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Oscillation Circuits and Operating Mode)
When switching over from the OSC3 to the OSC1,
turn the OSC3 oscillation circuit OFF immediately
following the clock changeover.
The basic clock switching procedure is as described
above, however, you must also combine it with the
changeover of the operating mode to permit low
current consumption and high speed operation.
Figure 5.3.6.1 indicates the status transition dia-
gram for the operation mode and clock changeover.
Note: When turning ON the OSC3 oscillation circuit
after switching the operating mode, you should
allow a minimum waiting time of 5 msec.
5.3.6 Switching the CPU clocks
You can use either OSC1 or OSC3 as the system
clock for the CPU and you can switch over by
means of software.
You can save power by turning the OSC3 oscilla-
tion circuit off while the CPU is operating in OSC1.
When you must operate on OSC3, you can change
to high speed operation by turning the OSC3
oscillation circuit ON and switching over the
system clock. In this case, since several msec to
several 10 msec are necessary for the oscillation to
stabilize after turning the OSC3 oscillation circuit
ON, you should switch over the clock after
stabilization time has elapsed. (The oscillation start
time will vary somewhat depending on the oscilla-
tor and on the externally attached parts. Refer to
the oscillation start time example indicated in
Chapter 7, "ELECTRICAL CHARACTERISTICS".)
*
The return destination from the standby status becomes the program execution status prior to shifting to the standby
status
Fig. 5.3.6.1 Status transition diagram for the operation mode and clock changeover
ON
ON or OFF
STOP
HALT status
OSC1
OSC3
CPU clock
OFF
STOP
SLEEP status
OSC1
OSC3
CPU clock
Program Execution Status
Standby Status
HALT instruction
SLP instruction
*
Interrupt
*
Interrupt
(Input interrupt)
VDC0=0
VDC1=0
OSCC=0
RESET
OSCC=1
CLKCHG=0
CLKCHG=1
OSCC=0
OSCC=1
CLKCHG=0
CLKCHG=1
ON
OFF
OSC1
ON
OFF
OSC1
ON
OSC1
ON
OSC1
ON
OSC3
ON
OSC3
High speed mode
ON
OFF
OSC1
Normal mode
Low power mode
High speed mode
Normal mode
High speed mode
Normal mode
VDC0=
VDC1=1
VDC0=1
VDC1=0
VDC0=0
VDC1=0
×
OSC1
OSC3
CPU clock
OSC1
OSC3
CPU clock
OSC1
OSC3
CPU clock
OSC1
OSC3
CPU clock
OSC1
OSC3
CPU clock
OSC1
OSC3
CPU clock
OSC1
OSC3
CPU clock
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S-35390A-T8T1G 功能描述:實(shí)時(shí)時(shí)鐘 2-Wire 1.3-5.5V 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
S-35390A-T8T1U 功能描述:IC RTC CLK/CALENDAR I2C 8TSSOP 制造商:ablic u.s.a. inc. 系列:- 零件狀態(tài):在售 類型:時(shí)鐘/日歷 特性:警報(bào)器，閏年 存儲(chǔ)容量:- 時(shí)間格式:HH：MM：SS（12/24 小時(shí)） 日期格式:YY-MM-DD-dd 接口:I2C，2 線串口 電壓 - 電源:1.3 V ~ 5.5 V 電壓 - 電源，電池:- 電流 - 計(jì)時(shí)（最大）:14μA ~ 30μA @ 3V ~ 5V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商器件封裝:8-TSSOP 標(biāo)準(zhǔn)包裝:1
S-35391A-I8T1U 功能描述:IC RTC CLK/CALENDAR I2C SNT-8A 制造商:ablic u.s.a. inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 類型:時(shí)鐘/日歷 特性:警報(bào)器，閏年 存儲(chǔ)容量:- 時(shí)間格式:HH：MM：SS（12/24 小時(shí)） 日期格式:YY-MM-DD-dd 接口:I2C，2 線串口 電壓 - 電源:1.3 V ~ 5.5 V 電壓 - 電源，電池:- 電流 - 計(jì)時(shí)（最大）:14μA ~ 30μA @ 3V ~ 5V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SMD，扁平引線 供應(yīng)商器件封裝:SNT-8A 標(biāo)準(zhǔn)包裝:1
S-35392A 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:2-WIRE REAL-TIME CLOCK
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