34
9152BINDCO02/10
ATA8743
13.3.5
Write
To write a location, the user must write the address into EEAR and the data into EEDR. If the
EEPMn bits are 0b10, writing the EEPE (within four cycles after EEMPE is written) will trigger
the write operation only (programming time is given in Table 1). The EEPE bit remains set until
the write operation completes. If the location to be written has not been erased before write, the
data that is stored must be considered as lost. While the device is busy with programming, it is
not possible to do any other EEPROM operations.
The calibrated Oscillator is used to time the EEPROM accesses. Make sure the Oscillator fre-
quency is within the requirements described in Oscillator Calibration Register OSCCAL on
page 48.
The following code examples show one assembly and one C function for erase, write, or atomic
write of the EEPROM. The examples assume that interrupts are controlled (e.g., by disabling
interrupts globally) so that no interrupts will occur during execution of these functions.
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
ATAVRRZ200
KIT DEMO AT86RF230
AV101-12LF
ATTENUATOR HIP3 0.70-1GHZ 8-SOIC
AV102-12LF
ATTENUATOR HIP3 1.7-2GHZ 8SOIC
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