MAX6884 データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
MAX6884 Datasheet PDF : 34 Pages
| |||
EEPROM-Programmable, Hex
Power-Supply Supervisory Circuits
Table 9. Fault Registers (28h–2Ah)
REGISTER
ADDRESS
28h
29h
2Ah
BIT RANGE
DESCRIPTION
[0]
[1]
[2]
[3]
[4]
[5]
[7:6]
[0]
[1]
[2]
[3]
[4]
[5]
[7:6]
[0]
[1]
[6:2]
[7]
1 = IN1 Voltage Falls Below Primary Undervoltage Threshold
1 = IN2 Voltage Falls Below Primary Undervoltage Threshold
1 = IN3 Voltage Falls Below Primary Undervoltage Threshold
1 = IN4 Voltage Falls Below Primary Undervoltage Threshold
1 = IN5 Voltage Falls Below Primary Undervoltage Threshold
1 = IN6 Voltage Falls Below Primary Undervoltage Threshold
Unused
1 = IN1* Voltage Falls Below Secondary Threshold
1 = IN2* Voltage Falls Below Secondary Threshold
1 = IN3* Voltage Falls Below Secondary Threshold
1 = IN4* Voltage Falls Below Secondary Threshold
1 = IN5* Voltage Falls Below Secondary Threshold
1 = IN6* Voltage Falls Below Secondary Threshold
Unused
1 = UV/OV Has Been Asserted
1 = RESET Has Been Asserted
Unused
1 = WDO Has Been Asserted
*Does not matter if set as undervoltage or overvoltage.
Configuration Lock
Lock the configuration register bank and configuration
EEPROM contents after initial programming by setting
the lock bit high (see Table 10). Locking the configura-
tion prevents write operations to configuration EEPROM
and configuration registers except the configuration
lock bit. Set the lock bit to 0 to reconfigure the device.
Write Disable
A unique write disable feature protects the
MAX6884/MAX6885 from inadvertent user EEPROM
writes. As input voltages that power the serial interface,
a µP, or any other writing devices fall, unintentional
data may be written onto the data bus. The user
EEPROM write-disable function (see Table 11) ensures
that unintentional data does not corrupt the MAX6884/
MAX6885 user EEPROM data.
Table 10. Configuration Lock Bit
REGISTER
ADDRESS
EEPROM
MEMORY
ADDRESS
BIT RANGE
16h
96h
[3]
DESCRIPTION
1 = Configuration Locked
0 = Configuration Unlocked
22 ______________________________________________________________________________________
Share Link: 