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參數(shù)資料
| 型號： | S-35390A-T8T1 |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | REAL TIME CLOCK, PDSO8 |
| 封裝： | TSSOP-8 |
| 文件頁數(shù)： | 8/48頁 |
| 文件大小： | 542K |
| 代理商： | S-35390A-T8T1 |
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8
EPSON
S1C88816 TECHNICAL MANUAL
2 POWER SUPPLY
2 POWER SUPPLY
In this section, we will explain the operating voltage and the configuration of the internal power
supply circuit of the S1C88816.
2.1 Operating Voltage
The S1C88816 operating power voltage is as
follows:
Normal mode:
2.4 V to 5.5 V
Low power mode:
1.8 V to 5.5 V
High speed mode:
3.5 V to 5.5 V
If supply voltage drops below level 0 (see Chapter
7, "ELECTRICAL CHARACTERISTICS"), the
system is automatically reset by a supply voltage
detection (SVD) circuit described in the latter. This
function can be selected by mask option.
2.2 Internal Power Supply Circuit
The S1C88816 incorporates the power supply circuit
shown in Figure 2.2.1. When voltage within the
range described above is supplied to VDD (+) and VSS
(GND), all the voltages needed for the internal circuit
are generated internally in the IC.
Roughly speaking, the power supply circuit is
divided into three sections.
The internal logic voltage regulator generates the
operating voltage <VD1> for driving the internal
logic circuits and the OSC3 oscillation circuit.
The VD1 voltage can be selected from the following
three types: 1.3 V for low-power mode, 2.2 V for
normal mode and 3.3 V for high-speed mode.
It should be selected by a program to switch
according to the supply voltage and oscillation
frequency.
See Section 5.3, "Oscillation Circuits and Operating
Mode", for the switching of operating mode.
The oscillation system voltage regulator generates
the operating voltage <VOSC> for the OSC1
oscillation circuit.
The LCD system power supply circuit generates the
LCD drive voltages <VC1> to <VC5>. In 1/5 bias
mode, VC1 is generated by halving VC2 output from
the LCD system voltage regulator and VC3 to VC5 are
generated by boosting VC2. These five voltages can
be supplied from outside the IC by mask option.
See Chapter 7, "ELECTRICAL CHARACTERIS-
TICS" for the voltage values.
In the S1C88816, the LCD drive voltage is supplied
to the built-in LCD driver which drives the LCD
panel connected to the SEG and COM terminals.
Note: Do not use the voltages output from the
internal power supply circuit for driving
external circuits.
Fig. 2.2.1 Configuration of power supply circuit (VC2 standard, 1/4 bias)
VDD
V
VOSC
D1
VC1
VC3
VC4
VC5
CA
CB
CC
CD
CE
CF
CG
VSS
LCD driver
VD1
VOSC
VC2
External
power
supply
OSC3, OSC4
OSC1, OSC2
Internal logic
voltage regulator
OSC3
oscillation circuit
Internal voltage
setting circuit
Oscillation system
voltage regulator
Internal circuit
OSC1
oscillation circuit
COM0–COM15
COM16–COM31/SEG87–SEG72
SEG0–SEG71
LCD system
voltage regulator
LCD system
voltage booster/
reducer circuit
VC2
VC1, VC3–VC5
1
1 When VC2 standard
and 1/5 bias are selected.
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| S-35390A-T8T1G | 功能描述:實時時鐘 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 時間格式:HH:MM:SS RTC 存儲容量: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:時鐘/日歷 特性:警報器，閏年 存儲容量:- 時間格式:HH：MM：SS（12/24 小時） 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 - 計時（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:時鐘/日歷 特性:警報器，閏年 存儲容量:- 時間格式:HH：MM：SS（12/24 小時） 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 - 計時（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 |
| S-35392A-I8T1G | 功能描述:實時時鐘 2-wire 實時時鐘 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 時間格式:HH:MM:SS RTC 存儲容量: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 |
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