Datasheet

© 2009 Microchip Technology Inc. DS22153C-page 19
MCP9843/98243
FIGURE 5-2: Timing Diagram for Reading the Capability Register (See Section 4.0 “Serial
Communication”).
bit 1 Accuracy:
0 = Accuracy → ±2°C from +75°C to +95°C (Active Range) and ±3°C from +40°C to +125°C
(Monitor Range)
1 = Accuracy → ±1°C from +75°C to +95°C (Active Range) and ±2°C from +40°C to +125°C
(Monitor Range)
bit 0 Temperature Alarm:
0 = No defined function (This bit will never be cleared or set to ‘0’)
1 = The part has temperature boundary trip limits (T
UPPER
/T
LOWER
/T
CRIT
registers) and a
temperautre event output (JC 42.4 required feature)
REGISTER 5-2: CAPABILITY REGISTER (READ-ONLY) → ADDRESS ‘0000 0000’b (CONTINUED)
SDA
A
C
K
0011
A
Capability Pointer
0000
A
C
K
S
2
A
1
A
0
12345678 12345678
SCL
0
Address Byte
A
C
K
0011
A
MSB Data
A
C
K
N
A
K
S P
2
A
1
A
0
12345678 12345678 12345678
Address Byte
LSB Data
R
MCP9843/98243
MCP9843/98243
MCP9843/98243
Master
Master
W
SDA
SCL
000
00000
000 00001
111