參數(shù)資料
型號(hào)： 25LC128
廠商： Microchip Technology Inc.
英文描述： 128K 5.0V SPI Bus Serial EEPROM(2.5~5.5V,128K位,SPI總線串行EEPROM)
中文描述： 128K的5.0V SPI總線串行EEPROM（2.5?5.5V的，128K的位和SPI總線串行EEPROM的）
文件頁(yè)數(shù)： 59/170頁(yè)
文件大?。?/td> 4191K
代理商： 25LC128
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2003 Microchip Technology Inc.
Preliminary
DS40300C-page 57
PIC16F62X
9.6
Comparator Interrupts
The Comparator Interrupt flag is set whenever there is
a change in the output value of either comparator.
Software will need to maintain information about the
status of the output bits, as read from CMCON<7:6>, to
determine the actual change that has occurred. The
CMIF bit, PIR1<6>, is the Comparator Interrupt Flag.
The CMIF bit must be RESET by clearing ‘0’. Since it is
also possible to write a '1' to this register, a simulated
interrupt may be initiated.
The CMIE bit (PIE1<6>) and the PEIE bit
(INTCON<6>) must be set to enable the interrupt. In
addition, the GIE bit must also be set. If any of these
bits are clear, the interrupt is not enabled, though the
CMIF bit will still be set if an interrupt condition occurs.
The user, in the interrupt service routine, can clear the
interrupt in the following manner:
a)
Any write or read of CMCON. This will end the
mismatch condition.
b)
Clear flag bit CMIF.
A mismatch condition will continue to set flag bit CMIF.
Reading CMCON will end the mismatch condition, and
allow flag bit CMIF to be cleared.
9.7
Comparator Operation During
SLEEP
When a comparator is active and the device is placed
in SLEEP mode, the comparator remains active and
the interrupt is functional if enabled. This interrupt will
wake-up the device from SLEEP mode when enabled.
While the comparator is powered-up, higher SLEEP
currents than shown in the power-down current
specification will occur. Each comparator that is
operational will consume additional current as shown in
the comparator specifications. To minimize power
consumption while in SLEEP mode, turn off the
comparators, CM<2:0> = 111, before entering SLEEP.
If the device wakes-up from SLEEP, the contents of the
CMCON register are not affected.
9.8
Effects of a RESET
A device RESET forces the CMCON register to its
RESET state. This forces the Comparator module to be
in the comparator RESET mode, CM2:CM0 = 000.
This ensures that all potential inputs are analog inputs.
Device current is minimized when analog inputs are
present at RESET time. The comparators will be
powered-down during the RESET interval.
9.9
Analog Input Connection
Considerations
A simplified circuit for an analog input is shown in
Figure 9-4. Since the analog pins are connected to a
digital output, they have reverse biased diodes to V
DD
and V
SS
. The analog input therefore, must be between
V
SS
and V
DD
. If the input voltage deviates from this
range by more than 0.6V in either direction, one of the
diodes is forward biased and a latchup may occur. A
maximum
source
impedance
recommended for the analog sources. Any external
component connected to an analog input pin, such as
a capacitor or a Zener diode, should have very little
leakage current.
of
10 k
is
Note:
If a change in the CMCON register
(C1OUT or C2OUT) should occur when a
read operation is being executed (start of
the Q2 cycle), then the CMIF (PIR1<6>)
interrupt flag may not get set.
相關(guān)PDF資料
PDF描述
25C256 256K 5.0V SPI Bus Serial EEPROM(4.5~5.5V,256K位,SPI總線串行EEPROM)
25C160 8K/16K 5.0V SPI Bus Serial EEPROM
25C080 8K 5.0V SPI Bus Serial EEPROM(4.5~5.5V,3MHz,8K位,10M次可自定時(shí)擦寫(xiě)周期,EEPROM)
25C320 32K 5.0V SPI Bus Serial EEPROM
25C320T 32K SPI Bus Serial EEPROM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
25LC128-E/MF 功能描述:電可擦除可編程只讀存儲(chǔ)器 128k 32KX8 2.5V SER EE EXT RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
25LC128-E/P 功能描述:電可擦除可編程只讀存儲(chǔ)器 128k 32KX8 2.5V SER EE EXT RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
25LC128-E/SM 功能描述:電可擦除可編程只讀存儲(chǔ)器 128k 32KX8 2.5V SER EE EXT RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
25LC128-E/SN 功能描述:電可擦除可編程只讀存儲(chǔ)器 128k 32KX8 2.5V SER EE EXT RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
25LC128-E/ST 功能描述:電可擦除可編程只讀存儲(chǔ)器 128k 32KX8 2.5V SER EE EXT RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
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