MCP98243 Microchip Technology Inc., MCP98243 Datasheet - Page 21

• Manufacturer Part Number: MCP98243
• Description: Memory Module Temperature Sensor W/ Eeprom For Spd
• Manufacturer: Microchip Technology Inc.

REGISTER 5-3:
© 2009 Microchip Technology Inc.
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
T
0 =
1 =
When enabled, this bit remains set ‘1’ or locked until cleared by internal reset (Section 5.4 “Summary
of Power-on Default”). This bit does not require a double-write.
This bit can be programmed in shutdown mode.
T
0 =
1 =
When enabled, this bit remains set ‘1’ or locked until cleared by power-on Reseet (Section 5.4 “Sum-
mary of Power-on Default”). This bit does not require a double-write.
This bit can be programmed in shutdown mode.
Interrupt Clear (Int. Clear) Bit:
0 =
1 =
This bit can not be set ‘1’ in shutdown mode, but it can be cleared after the device enters shutdown
mode.
Event Output Status (Event Stat.) Bit:
0 =
1 =
This bit can not be set ‘1’ or cleared ‘0’ in shutdown mode. However, if the Event output is configured
as interrupt mode, and if the host controller clears ‘0’ the interrupt using bit 5 while the device is in
shutdown mode then this bit will also be cleared ‘0’.
Event Output Control (Event Cnt.) Bit:
0 =
1 =
This bit can not be altered when either of the lock bits is set (bit 6 and bit 7).
This bit can be programmed in shutdown mode, but the Event output will not assert or de-assert.
Event Output Select (Event Sel.) Bit:
0 =
1 = T
When the Alarm Window Lock bit is set, this bit cannot be altered until unlocked (bit 6).
This bit can be programmed in shutdown mode, but the Event output will not assert or de-assert.
Event Output Polarity (Event Pol.) Bit:
0 =
1 =
This bit cannot be altered when either of the lock bits is set (bit 6 and bit 7).
This bit can be programmed in shutdown mode, but the Event output will not assert or de-assert.
Event Output Mode (Event Mod.) Bit:
0 =
1 =
This bit cannot be altered when either of the lock bits is set (bit 6 and bit 7).
This bit can be programmed in shutdown mode, but the Event output will not assert or de-assert.
CRIT
UPPER
Configuration”
CONFIGURATION REGISTER (CONFIG) → ADDRESS
Unlocked. T
Locked. T
Unlocked. T
Locked. T
No effect (power-up default)
Clear interrupt output. When read this bit returns ‘0’
Event output is not asserted by the device (power-up default)
Event output is asserted as a comparator/Interrupt or critical temperature output
Disabled (power-up default)
Enabled
Event output for T
Active low (power-up default. Pull-up resistor required) See Section 5.2.3 “Event Output
Active-high (Pull-down resistor required) See Section 5.2.3 “Event Output Configuration”
Comparator output (power-up default)
Interrupt output
Lock Bit (Crit. Lock):
A
and T
≥ T
CRIT
LOWER
CRIT
UPPER
only. (T
CRIT
UPPER
register can not be written
Window Lock Bit (Win. Lock):
register can be written. (power-up default)
and T
UPPER
UPPER
and T
LOWER
, T
LOWER
and T
LOWER
registers can not be written
LOWER
registers can be written. (power-up default)
and T
temperature boundaries are disabled.)
CRIT
(power-up default)
‘0000 0001’b
MCP98243
DS22153A-page 21