- 您现在的位置：买卖IC网 > PDF目录80366 > MB9AF314NBGL 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PBGA112 PDF资料下载
参数资料
| 型号： | MB9AF314NBGL |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PBGA112 |
| 封装： | 0.80 MM PITCH, PLASTIC, FBGA-112 |
| 文件页数： | 39/114页 |
| 文件大小： | 1357K |
| 代理商： | MB9AF314NBGL |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页当前第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
30
9.6
Calibrated Internal RC Oscillator
By default, the internal RC oscillator provides an approximate 8.0MHz clock. Though voltage and temperature dependent,
this clock can be very accurately calibrated by the user. See Table 29-3 on page 271 for more details. The device is shipped
with the CKDIV8 Fuse programmed. See Section 9.11 “System Clock Prescaler” on page 32 for more details.
This clock may be selected as the system clock by programming the CKSEL fuses as shown in Table 9-1 on page 25. If
selected, it will operate with no external components. During reset, hardware loads the pre-programmed default 3V
calibration value into the OSCCAL register and thereby automatically calibrates the RC oscillator for 3V operation. If the
device is to be used at 5V then the alternate RC oscillator 5V calibration Byte (Table 27-5 on page 244) can be read from
signature row and stored into the OSCCAL register by the user application program for better 5V frequency accuracy. The
accuracy of this calibration is shown as factory calibration in Table 29-3 on page 271.
By changing the OSCCAL register from SW, see Section 9.12.1 “OSCCAL – Oscillator Calibration Register” on page 33, it is
possible to get a higher calibration accuracy than by using the factory calibration. The accuracy of this calibration is shown
as User calibration in Table 29-3 on page 271.
When this oscillator is used as the chip clock, the watchdog oscillator will still be used for the watchdog timer and for the
reset time-out. For more information on the pre-programmed calibration value, see Section 28.4 “Calibration Byte” on page
254.
When this oscillator is selected, start-up times are determined by the SUT fuses as shown in Table 9-12.
9.7
128kHz Internal Oscillator
The 128kHz internal oscillator is a low power oscillator providing a clock of 128kHz. The frequency is nominal at 3V and
25°C. This clock may be select as the system clock by programming the CKSEL fuses to “11” as shown in Table 9-13.
Table 9-11. Internal Calibrated RC Oscillator Operating Modes
Frequency Range(2) (MHz)
CKSEL3...0
7.3 - 8.1
0010(1)
Notes: 1.
The device is shipped with this option selected.
2.
If 8MHz frequency exceeds the specification of the device (depends on VCC), the CKDIV8 Fuse can be pro-
grammed in order to divide the internal frequency by 8.
Table 9-12. Start-up times for the internal calibrated RC Oscillator clock selection
Power Conditions
Start-up Time from Power-down and
Power-save
Additional Delay from Reset
(VCC = 5.0V)
SUT1...0
BOD enabled
6CK
14CK(1)
00
Fast rising power
6CK
14CK + 4.1ms
01
Slowly rising power
6CK
14CK + 65ms(2)
10
Reserved
11
Note:
1.
If the RSTDISBL fuse is programmed, this start-up time will be increased to
14CK + 4.1ms to ensure programming mode can be entered.
2.
The device is shipped with this option selected.
Table 9-13. 128kHz Internal Oscillator Operating Modes
Nominal Frequency(1)
CKSEL3...0
128kHz
0011
Note:
1.
Note that the 128kHz oscillator is a very low power clock source, and is not designed for high accuracy.
相关PDF资料 |
PDF描述 |
|---|---|
| MB9BF418SPMC | RISC MICROCONTROLLER, PQFP144 |
| M38802M1-XXXFS | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, CQCC64 |
| MAQ281CE | 16-BIT, MICROPROCESSOR, DMA64 |
| MAS281CS | 16-BIT, MICROPROCESSOR, DMA64 |
| M37730S2ASP | 16-BIT, 16 MHz, MICROCONTROLLER, PDIP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MB9AF314NBGL-GE1 | 制造商:FUJITSU 功能描述: 制造商:FUJITSU 功能描述:MCU 32BIT CORTEX-M3 FM3 112BGA 制造商:FUJITSU 功能描述:MCU, 32BIT, CORTEX-M3, FM3, 112BGA 制造商:FUJITSU 功能描述:MCU, 32BIT, CORTEX-M3, FM3, 112BGA, Controller Family/Series:ARM Cortex-M3, Core 制造商:FUJITSU 功能描述:MCU, 32BIT, CORTEX-M3, FM3, 112BGA, Controller Family/Series:ARM Cortex-M3, Core Size:32bit, No. of I/O's:83, Supply Voltage Min:2.7V, Supply Voltage Max:5.5V, Digital IC Case Style:BGA, No. of Pins:112, Program Memory Size:256KB, , RoHS Compliant: Yes |
| MB9AF314NPMC-GE1 | 制造商:FUJITSU 功能描述: |
| MB9AF314NPMC-G-JNE1 | 制造商:FUJITSU 功能描述: 制造商:FUJITSU 功能描述:MCU 32BIT CORTEX-M3 FM3 100LQFP 制造商:FUJITSU 功能描述:MCU, 32BIT, CORTEX-M3, FM3, 100LQFP, Controller Family/Series:ARM Cortex-M3, Cor |
| MB9AF316MAPMC-G-JNE2 | 制造商:Fujitsu 功能描述:Bulk |
| MB9AF316MPMC-G-JNE1 | 制造商:FUJITSU 功能描述:MCU 32BIT CORTEX-M3 FM3 80LQFP 制造商:FUJITSU 功能描述:MCU, 32BIT, CORTEX-M3, FM3, 80LQFP, Controller Family/Series:ARM Cortex-M3, Core |
发布紧急采购，3分钟左右您将得到回复。