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AB0805 の電気的特性と機能

AB0805のメーカーはAbraconです、この部品の機能は「Real-Time Clock Module」です。


製品の詳細 ( Datasheet PDF )

部品番号 AB0805
部品説明 Real-Time Clock Module
メーカ Abracon
ロゴ Abracon ロゴ 




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AB0805 Datasheet, AB0805 PDF,ピン配置, 機能
AB08XX Real-Time Clock Family
Date of Issue: November 7, 2013
3.0 x 3.0 mm
Page 1 of 34
Abracon Drawing #453567
Revision : A
Features
• Ultra-low supply current (all at 3V):
- 14 nA with RC oscillator
- 22 nA with RC oscillator and Autocalibration
- 55 nA with crystal oscillator
• Baseline timekeeping features:
- 32.768 kHz crystal oscillator with integrated
load capacitor/resistor
- Counters for hundredths, seconds, minutes,
hours, date, month, year, century, and week-
day
- Alarm capability on all counters
- Programmable output clock generation
(32.768 kHz to 1 year)
- Countdown timer with repeat function
- Automatic leap year calculation
• Advanced timekeeping features:
- Integrated power optimized RC oscillator
- Advanced crystal calibration to ± 2 ppm
- Advanced RC calibration to ± 16 ppm
- Automatic calibration of RC oscillator to crystal
oscillator
- Watchdog timer with hardware reset
- Up to 256 bytes of general purpose RAM
• Power management features:
- Automatic switchover to VBAT
- External interrupt monitor
- Programmable low battery detection threshold
- Programmable analog voltage comparator
• I2C (up to 400 kHz) and 3-wire or 4-wire SPI (up
to 2 MHz) serial interfaces available
• Operating voltage 1.5-3.6 V
• Clock and RAM retention voltage 1.5-3.6 V
• Operating temperature –40 to 85 °C
• All inputs include Schmitt Triggers
• 3x3 mm QFN-16 package
Applications
• Smart cards
• Wireless sensors and tags
• Medical electronics
• Utility meters
• Data loggers
• Appliances
• Handsets
• Consumer electronics
• Communications equipment
Description
The ABRACON AB08XX Real Time Clock family
provides a groundbreaking combination of ultra-low
power coupled with a highly sophisticated feature
set. With power requirements significantly lower than
any other industry RTC (as low as 14 nA), these are
the first semiconductors based on innovative
SPOTTM (Subthreshold Power Optimized
Technology) CMOS platform. The AB08XX includes
on-chip oscillators to provide minimum power
consumption, full RTC functions including battery
backup and programmable counters and alarms for
timer and watchdog functions, and either an I2C or
SPI serial interface for communication with a host
controller.
Disclaimer: AB08XX series of devices are
based on innovative SPOT technology,
proprietary to Ambiq Micro.

1 Page





AB0805 pdf, ピン配列
AB08XX Real-Time Clock Family
Date of Issue: November 7, 2013
3.0 x 3.0 mm
Page 3 of 37
Abracon Drawing #453567
2. Functional Description
Figure 1 illustrates the AB08XX functional design.
VCC VBAT
nCE
SDI
SCL
SDA/O
XO
XI
WDI
EXTI
I2C/SPI
Interface
Power
Control
Calibration Engine
XT Osc
Divider
RC Osc
Divider
Analog
Compare
100ths
Seconds
Minutes
Hours
Days
Weekdays
Months
Years
Alarms
Timer
WDT
Control
RAM
Int/Clock
Revision : A
FOUT/nIRQ
nIRQ2
nTIRQ
CLKOUT/nIRQ3
VSS
Figure 1. Detailed Block Diagram
The AB08XX serves as a full function RTC for host processors such as microcontrollers. The AB08XX
includes 3 distinct feature groups: 1) baseline timekeeping features, 2) advanced timekeeping features,
and 3) basic power management features. Functions from each feature group may be controlled via I/O
offset mapped registers. These registers are accessed using either an I2C serial interface (e.g., in the
AB0805) or a SPI serial interface (e.g., in the AB0815). Each feature group is described briefly below and
in greater detail in subsequent sections.
The baseline timekeeping feature group supports the standard 32.786 kHz crystal (XT) oscillation mode for
maximum frequency accuracy with an ultra-low current draw of 55 nA. The baseline timekeeping feature
group also includes a standard set of counters monitoring hundredths of a second up through centuries. A
complement of countdown timers and alarms may additionally be set to initiate interrupts or resets on
several of the outputs.


3Pages


AB0805 電子部品, 半導体
AB08XX Real-Time Clock Family
Date of Issue: November 7, 2013
Page 6 of 37
4. Package Pins
3.0 x 3.0 mm
Abracon Drawing #453567
Revision : A
4.1 Pin Configuration and Connections
Figure 2 and Table 2 show the QFN-16 pin configurations for the AB08XX parts. Pins labeled NC must be
left unconnected. The thermal pad, pin 17, on the QFN-16 packages must be connected to VSS.
AB080X
NC 1
(1) WDI
NC
VSS
PAD
nIRQ2
nTIRQ (1)
FOUT/nIRQ
EXTI (1)
VSS
AB081X
NC 1
(3) WDI
NC
VSS
PAD
nIRQ2
nCE
FOUT/nIRQ
EXTI (3)
SDI
(1) Available in AB0804 and AB0805 only, else NC
(2) Available in AB0803 and AB0805 only, else VSS
(3) Available in AB0814 and AB0815 only, else NC
(4) Available in AB0813 and AB0815 only, else VSS
Figure 2. Pin Configuration Diagram
Table 2: Pin Connections
Pin Name
Pin
Type
Function
Pin Number in AB08XX
01 03 04 05 11 13 14 15
VSS
VCC
XI
XO
AF
VBAT
Power
Power
XT
XT
Output
Power
Ground
System power supply
Crystal input
Crystal output
Autocalibration filter
Battery power supply
5,9,17 9,17 5,9,17 9,17 5,17 17 5,17 17
13 13 13 13 13 13 13 13
16 16 16 16 16 16 16 16
15 15 15 15 15 15 15 15
14 14 14 14 14 14 14 14
5555
SCL
SDO
SDI
nCE
Input I2C or SPI interface clock
7
7
7
7
7
7
7
7
Output SPI data output
6666
Input SPI data input
9999
Input SPI chip select
12 12 12 12
SDA
EXTI
WDI
FOUT/nIRQ
nIRQ2
CLKOUT/nIRQ3
nTIRQ
Input
Input
Input
Output
Output
Output
Output
I2C data input/output
External interrupt input
Watchdog reset input
Int 1/function output
Int 2 output
Int 3/clock output
Timer interrupt output
6666
10 10
10 10
22
22
11 11 11 11 11 11 11 11
44444444
88
88
12 12

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
AB0801

Real-Time Clock Module

Abracon
Abracon
AB0803

Real-Time Clock Module

Abracon
Abracon
AB0804

Real-Time Clock Module

Abracon
Abracon
AB0805

Real-Time Clock Module

Abracon
Abracon


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