MIC384
Micrel
Register Set and Programmer’s Model
Internal Register Set
Na me
T E MP 0
C O N F IG
T _HY S T 0
T _S E T 0
T E MP 1
T _HY S T 1
T _S E T 1
T E MP 2
T _HY S T 2
T _S E T 2
(1)
(2)
D e s c r i p ti o n
me a s ure d te mpe ra ture ,
loc a l z one
c onfigura tion re gis te r
hys te re s is s e tting, loc a l
z o ne
te mpe ra ture s e tpoint, loc a l
z o ne
me a s ure d te mpe ra ture ,
z o ne 1
hys te re s is s e tting, z one 1
te mpe ra ture s e tpoint,
z o ne 1
me a s ure d te mpe ra ture ,
z o ne 2
hys te re s is s e tting, z one 2
te mpe ra ture s e tpoint,
z o ne 2
C o m m a n d B y te
00
h
01
h
02
h
03
h
10
h
1 2
h
13
h
20h
22h
23h
O p e r a ti o n
8 -bit re a d only
8 -bit re a d/write
8 -bit re a d/write
8 -bit re a d/write
8 -bit re a d only
8 -bit re a d/write
8 -bit re a d/write
8 -bit re a d only
8 -bit re a d/write
8 -bit re a d/write
P o w e r -U p D e f a u l t
0 0
h
( 0° C )
(1)
0 0
h( 2 )
4 C
h
( +7 6 ° C )
5 1
h
( +8 1 ° C )
0 0
h
( 0° C )
(1)
5 C
h
( +9 2 ° C )
6 1
h
( +9 7 ° C )
0 0
h
( 0° C )
(1)
5 C
h
( +9 2 ° C )
6 1
h
( +9 7 ° C )
TEMPx will contain measured temperature data after the completion of one conversion cycle.
After the first Fault_Queue conversions are complete, status bits will be set if TEMPx > T_SETx.
Detailed Register Descriptions
Configuration Register
C O N F IG U R A T IO N R E G IS T E R (C O N F IG )
8 -B i t R e a d /W r i te
D [7]
re a d only
loc a l
s ta tus
(S 0)
B i ts
S0
S1
C R IT 1
D [ 6]
re a d only
re mote
s ta tus
(S 1)
D [ 5]
re a d only
/C R I T
s ta tus
(C R IT 1)
F u n c ti o n
D [ 4]
D [ 3]
D [ 2]
re a d/write
inte rrupt
ma s k
( I M)
D [ 1]
re a d/write
C MP /I N T
mode
( MO D E )
O p e r a ti o n
D [ 0]
re a d/write
S hutdown
(S H DN )
re a d/write
fa ult que ue
de pth
( F Q [1 : 0 ])
loc a l inte rrupt s ta tus ( re a d only)
re mote inte rrupt s ta tus ( re a d only)
re mote ove r-te mpe ra ture s ta tus ( re a d only)
1 = e ve nt oc c ure d, 0 = no e ve nt
1 = e ve nt oc c ure d, 0 = no e ve nt
1 = ove r-te mpe ra ture , 0 = no e ve nt
0 0 = 1 c onve rs ion, 0 1 = 2 c onve rs ions ,
1 0 = 4 c onve rs ions , 1 1 = 6 c onve rs ions
1 = dis a ble d, 0 = inte rrupts e na ble d
1 = inte rrupt mode ,
0 = c ompa ra tor mode
1 = s hutdown,
0 = norma l
F Q [1 : 0 ] F a ult_ Q ue ue de pth
IM
MO D E
S HDN
inte rrupt ma s k
c ompa ra tor/inte rrupt
mode s e le c tion for /I N T pin
norma l/s hutdown
ope ra ting mode s e le c tion
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
MICREL [ MICREL SEMICONDUCTOR ]
