- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄299825 > R1130H281B-T2 (RICOH COMPANY LTD) 2.8 V FIXED POSITIVE LDO REGULATOR, 0.34 V DROPOUT, PDSO6 PDF資料下載
參數(shù)資料
| 型號(hào)： | R1130H281B-T2 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器 |
| 英文描述： | 2.8 V FIXED POSITIVE LDO REGULATOR, 0.34 V DROPOUT, PDSO6 |
| 封裝： | SOT-89, 5 PIN |
| 文件頁(yè)數(shù)： | 16/24頁(yè) |
| 文件大?。?/td> | 739K |
| 代理商： | R1130H281B-T2 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)當(dāng)前第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)
23
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
EEWE is set, any write to EEPMn will be ignored. During reset, the EEPMn bits will be reset to
0b00 unless the EEPROM is busy programming.
Bit 3 – EERIE: EEPROM Ready Interrupt Enable
Writing EERIE to one enables the EEPROM Ready Interrupt if the I bit in SREG is set. Writing
EERIE to zero disables the interrupt. The EEPROM Ready interrupt generates a constant inter-
rupt when EEWE is cleared. The interrupt will not be generated during EEPROM write or SPM.
Bit 2 – EEMWE: EEPROM Master Write Enable
The EEMWE bit determines whether setting EEWE to one causes the EEPROM to be written.
When EEMWE is set, setting EEWE within four clock cycles will write data to the EEPROM at
the selected address If EEMWE is zero, setting EEWE will have no effect. When EEMWE has
been written to one by software, hardware clears the bit to zero after four clock cycles. See the
description of the EEWE bit for an EEPROM write procedure.
Bit 1 – EEWE: EEPROM Write Enable
The EEPROM Write Enable Signal EEWE is the write strobe to the EEPROM. When address
and data are correctly set up, the EEWE bit must be written to one to write the value into the
EEPROM. The EEMWE bit must be written to one before a logical one is written to EEWE, oth-
erwise no EEPROM write takes place. The following procedure should be followed when writing
the EEPROM (the order of steps 3 and 4 is not essential):
1.
Wait until EEWE becomes zero.
2.
Wait until SPMEN (Store Program Memory Enable) in SPMCSR (Store Program Memory
Control and Status Register) becomes zero.
3.
Write new EEPROM address to EEAR (optional).
4.
Write new EEPROM data to EEDR (optional).
5.
Write a logical one to the EEMWE bit while writing a zero to EEWE in EECR.
6.
Within four clock cycles after setting EEMWE, write a logical one to EEWE.
The EEPROM can not be programmed during a CPU write to the Flash memory. The software
must check that the Flash programming is completed before initiating a new EEPROM write.
Step 2 is only relevant if the software contains a Boot Loader allowing the CPU to program the
Flash. If the Flash is never being updated by the CPU, step 2 can be omitted. See “Boot Loader
Support – Read-While-Write Self-Programming” on page 265 for details about Boot
programming.
Caution: An interrupt between step 5 and step 6 will make the write cycle fail, since the
EEPROM Master Write Enable will time-out. If an interrupt routine accessing the EEPROM is
interrupting another EEPROM access, the EEAR or EEDR Register will be modified, causing the
interrupted EEPROM access to fail. It is recommended to have the Global Interrupt Flag cleared
during all the steps to avoid these problems.
Table 6-1.
EEPROM Mode Bits
EEPM1
EEPM0
Programming
Time
Operation
0
3.4 ms
Erase and Write in one operation (Atomic Operation)
0
1
1.8 ms
Erase Only
1
0
1.8 ms
Write Only
1
–
Reserved for future use
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R1130H291A-T1 | 2.9 V FIXED POSITIVE LDO REGULATOR, 0.34 V DROPOUT, PDSO6 |
| R1130H291B-T2 | 2.9 V FIXED POSITIVE LDO REGULATOR, 0.34 V DROPOUT, PDSO6 |
| R1130H301A-T2 | 3 V FIXED POSITIVE LDO REGULATOR, 0.34 V DROPOUT, PDSO6 |
| R1130H301B-T2 | 3 V FIXED POSITIVE LDO REGULATOR, 0.34 V DROPOUT, PDSO6 |
| R1130H311A-T1 | 3.1 V FIXED POSITIVE LDO REGULATOR, 0.34 V DROPOUT, PDSO6 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R1130HXXXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Management ICs |
| R1131 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| R11-3-1.00A-B06EV-S | 制造商:Sensata Technologies 功能描述:Circuit Breaker Magnetic Circuit Protectors 1Pole 1A |
| R11-3-1.00A-B101EV-S | 制造商:Sensata Technologies 功能描述:Circuit Breaker Magnetic Circuit Protectors 1Pole 1A |
| R11-3-10.0A-29865-1 | 制造商:Airpax 功能描述:CIRCUIT BREAKER MAG-HYDR ROCKER 制造商:Sensata Technologies 功能描述:R11-3-10.0A-29865-1 /Pole # 1 /Prod Family: 0213 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。