内置调频32.768 kHz 晶体单元
接口类型:SPI总线接口
低备份电流:100 nA 典型值 / 3V
频率输出功能:输出频率可选择32.768kHz、1024Hz、1Hz
唤醒定时器功能
宽温工作 -40 oC 至 +125 oC, 符合AEC-Q100
RA4000CE:爱普生(EPSON)用于汽车、宽工作温度范围、高稳定性、SPI总线接口实时时钟芯片
完整型号:
型号 | 料号 | 封装尺寸 | MOQ |
RA4000CE YB A0 | X1B000491A00115 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
RA4000CE YB B8 | X1B000491A00915 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
RA4000CE YB C0 | X1B000491A01015 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
RA4000CE YB D0 | X1B000491A01115 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
RA4000CE YB E8 | X1B000491A01915 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
• 内置频率调整
32.768 kHz 晶体单元
宽温工作 -40°C 至 +125°C
• 接口类型:SPI-Bus 接口 3线、4线
• 低后备电流:300 nA Typ。 / 3 伏
• 时间戳功能:2个时间戳最大。
• 时间更新中断:每小时、每分钟、每秒
• 日、日、时、分、秒的闹铃中断
• 自动重复唤醒定时器中断
• 自监测中断
晶振停止
VDD 低
• 符合 AEC-Q100
RA4000CE 概述
RA4000CE 是一款集成了 32.768 kHz 数字温度补偿晶体振荡器 (DTCXO) 的 RTC 模块。它包括多种功能,例如带闰年校正的秒到年时钟/日历、时间警报、唤醒定时器、时间更新中断、时钟输出,以及可以在外部记录两个时间和日期的时间戳功能或内部事件发生,以及自监控功能检测到的电源状态。本产品符合AEC-Q100标准,低功耗运行,适合车载使用。
• 接口类型
3线 / 4线SPI-Bus
• 高稳定性
YB:±5.0 x 10-6 / -40 ºC 至 +85 ºC(月率:±13.2 秒)
:±8.0 x 10-6 / +85 ºC 至 +105 ºC(月率:±21 秒)
:±50.0 x 10-6 / +105 ºC 至 +125 ºC(月率:±132 秒)
• 时钟输出功能
输出频率可选择 32.768 kHz、1024 Hz、1 Hz
• 唤醒定时器功能
可以在 976.56 μs 到 32 年的周期内产生一个中断。
可用作时间积分计。
可用作看门狗定时器。
• 时间戳功能
记录数据:1/1024秒到1秒、秒、分、小时、天、月、年。
可记录事件数:2 个事件
触发源:外部事件(EVIN)输入、检测到电压下降/振荡停止状态、来自主机的命令输入。
EVIN 引脚具有消除抖动功能。
• 延迟复位功能
当检测到 VDD 电压下降状态时,可以输出复位信号。
• 状态输出 (SOUT)
可以输出选定的内部标志(中断标志、电压下降检测标志)状态。
RA4000CE 系统框图
RA4000CE (3-wire SPI)
RA4000CE Option A/B/C/ Block Diagram
RA4000CE (4-wire SPI)
RA4000CE Option D/E Block Diagram
RA4000CE 外形尺寸 Unit: mm
*The above diagram is the terminal layout for Option B. For other options, please refer to the Pin Option section.
Pin No. | Option A | Option B | Option C | Option D | Option E |
3 wire | 4 wire | ||||
1 | EVIN1 | N.C. | DI | ||
2 | VDD | ||||
3 | CE | ||||
4 | FOUT | /INT | |||
5 | N.C. | /RST | N.C. | /RST | |
6 | EVIN2 | N.C. | EVIN2 | ||
7 | DIO | DO | |||
8 | CLK | ||||
9 | GND | ||||
10 | SOUT | N.C. | SOUT |
RA4000CE 引脚功能
Signal Name | I / O | Function |
EVIN1,2 | Input | External event input pins Pull-up and pull-down is configurable by the resisters |
CE | Input | Slave select input pin A pull-down resistor (Typ. 300 kΩ) is included |
CLK | Input | Serial clock input pin |
DI | Input | Serial data input pin (4 wire) |
DO | Output | Serial data Output pin (4 wire) |
DIO | Input / Output | Serial data input/output pin (3 wire) |
FOUT | Output | Frequency output pin (CMOS). 32.768 kHz (default), 1024 Hz or 1 Hz clock output is selectable. This pin can be switched to the wakeup timer interrupt output (CMOS) |
/INT | Output | Interrupt output pin (N-ch. open drain). The wakeup timer, time update, alarm, and/or event detection interrupt signals can be selected to output from this pin. When two or more signals are selected, they are NORed before being output. |
/RST | Output | Reset output pin (N-ch. open drain) |
SOUT | Output | Status output pin |
VDD | - | Power-supply pin |
GND | - | Ground pin |
RA4000CE 规格
Electrical Characteristics
Item | Symbol | Conditions | Min. | Typ. | Max. | Unit | ||
Operating voltage | VDD | - | 1.6 | 3.0 | 5.5 | V | ||
Temp. compensated Voltage | VTEM | - | 1.6 | 3.0 | 5.5 | V | ||
Clock supply voltage | VCLK | - | 1.3 | 3.0 | 5.5 | V | ||
Operating temperature | Ta | - | -40 | +25 | +125 | ºC | ||
Frequency tolerance | Df / f | YB | Ta = -40 ºC to +85 ºC | ±5.0 | x 10-6 | |||
YB | Ta = +85 ºC to +105 ºC | ±8.0 | ||||||
YB | Ta = +105 ºC to +125 ºC | ±50.0 | ||||||
Current consumption | IDD1 | /INT = Hi-Z, FOUT: Output OFF (Hi-Z), Temp. Compensation interval 2.0 s, CE=L | No /RST pin | VDD = 5V | - | 0.35 | 1.8 | mA |
IDD2 | VDD = 3V | - | 0.3 | 1.7 | ||||
IDD11 | With /RST pin | VDD = 5V | - | 1.5 | 3.7 | |||
IDD12 | VDD = 2V | - | 0.6 | 2.25 |
32.768 kHz-DTCXO Frequency temperature characteristics (Example)
型号 | 料号 | 封装尺寸 | MOQ |
RA4000CE YB A0 | X1B000491A00115 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
RA4000CE YB B8 | X1B000491A00915 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
RA4000CE YB C0 | X1B000491A01015 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
RA4000CE YB D0 | X1B000491A01115 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
RA4000CE YB E8 | X1B000491A01915 | 3.2 x 2.5 x 1.0 | 2000PCS/REEL |
Product Name RA4000CE YB A0
RA4000CE YB B8
RA4000CE YB C0
RA4000CE YB D0
RA4000CE YB E8
(Standard form) ① ② ③ ④ ⑤
① Model ② Package type (CE : 3.2 x 2.5 x 1.0 mm Size)
③ Frequency tolerance (Exclude offset)
YB : ±5.0 x 10-6 / -40 ºC to +85 ºC (Monthly rate: ±13.2 seconds)
: ±8.0 x 10-6 / +85 ºC to +105 ºC (Monthly rate: ±21 seconds)
: ±50.0 x 10-6 / +105 ºC to +125 ºC (Monthly rate: ±132 seconds)
④ Pin Option
A: Option A
B: Option B
C: Option C
D: Option D
E: Option E
⑤ Reset output function
0: No /RST pin
8: With /RST pin (VDD drop detection voltage:+2.4V Type)
Product Number
RA4000CE YB A0 X1B000491A00115
RA4000CE YB B8 X1B000491A00915
RA4000CE YB C0 X1B000491A01015
RA4000CE YB D0 X1B000491A01115
RA4000CE YB E8 X1B000491A01915
① ② ③ ④ ⑤
① Crystal devices ② Model
③ Pb free code(1 or 2: EU RoHS compliant / Terminal plating : Sn)
④ Detail specifications ⑤ Packing (CE Standard 15: 2000pcs/Reel)
RA4000CE Footprint (Recommended)
RA4000CE
(Unit: mm)
为保持稳定运行,需提供一个 0.1uF 的旁路电容,在尽可能靠近晶体产品电源端子的位置(Vcc - GND 之间)。