MIC384_05 Datasheet, PDF (14/22 Pages) Micrel Semiconductor – Three-Zone Thermal Supervisor

MIC384
Register Set and Programmer’s Model
Internal Register Set
Name
Des c ription
TE MP 0
meas ured temperature,
local zone
C ONF IG configuration regis ter
T_HYS T0
hys teres is s etting, local
z one
T_S E T0
temperature s etpoint, local
z one
TE MP 1
meas ured temperature,
zone 1
T _HY S T 1 hys teres is s etting, zone 1
T_S E T1
temperature s etpoint,
zone 1
TE MP 2
meas ured temperature,
zone 2
T _HY S T 2 hys teres is s etting, zone 2
T_S E T2
temperature s etpoint,
zone 2
C ommand B yte
00_h
01_h
02_h
03_h
10_h
12_h
13_h
20h
22h
23h
O pe r a tio n
8-bit read only
8-bit read/write
8-bit read/write
8-bit read/write
8-bit read only
8-bit read/write
8-bit read/write
8-bit read only
8-bit read/write
8-bit read/write
P ower-Up Default
00_h (0° C )⁽¹⁾
00
(2)
h
4C _h (+76° C )
51_h (+81° C )
00_h (0° C )⁽¹⁾
5C _h (+92° C )
61_h (+97° C )
00_h (0° C )⁽¹⁾
5C _h (+92° C )
61_h (+97° C )
(1) TEMPx will contain measured temperature data after the completion of one conversion cycle.
(2) After the first Fault_Queue conversions are complete, status bits will be set if TEMPx > T_SETx.
Detailed Register Descriptions
Configuration Register
D[7]
read only
loc a l
s tatus
(S 0)
D[6]
read only
remote
s tatus
(S 1)
C ONFIGUR ATION R E GIS TE R (C ONFIG)
8-B it R ead/Write
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read only
re a d/write
read/write read/write read/write
/C R IT
s tatus
(C R IT1)
fault queue
depth
(F Q[1:0])
interrupt
mas k
(IM)
C MP /INT
mode
(MODE )
S hutdown
(S HDN)
B its
F unc tion
S 0 local interrupt s tatus (read only)
S 1 remote interrupt s tatus (read only)
C R IT 1 remote over-temperature s tatus (read only)
F Q[1:0] F ault_Queue depth
IM
MODE
S HDN
interrupt mas k
c ompa ra tor/inte rrupt
mode s election for /INT pin
normal/s hutdown
operating mode s election
O pe r a tio n
1 = event occured, 0 = no event
1 = event occured, 0 = no event
1 = over-temperature, 0 = no event
00 = 1 convers ion, 01 = 2 convers ions ,
10 = 4 convers ions , 11 = 6 convers ions
1 = dis abled, 0 = interrupts enabled
1 = interrupt mode,
0 = comparator mode
1 = s hutdown,
0 = normal
Micrel
CONFIG Power-Up Value: 0000 0000_b = 00_h(*)
• not in shutdown mode
• comparator mode
• Fault_Queue depth = 1
• interrupts enabled.
• no temperature events pending
CONFIG Command Byte Value: 0000 0001_b = 01_h
* Following the first Fault_Queue conversions, one or more of the status bits may be set.
MIC384
14
September 2005