W83627EG Nuvoton Technology Corporation of America, W83627EG Datasheet - Page 49

• Manufacturer Part Number: W83627EG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627EG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Both of pin 12 and pin 114 are connected to the power supply VCC with +3.3V. There are two functions
in these 2 pins with 3.3V. The first function is to supply internal (digital/analog) power in the
W83627EHF/EHG and the second function is that this voltage with 3.3V is connected to internal serial
resistors to monitor the +3.3V voltage. The W83627EHF/EHG internal two serial resistors are 34 KΩ
and 34 KΩ so that input voltage to ADC is 1.65V which is less than 2.048V of ADC maximum input
voltage. The express equation can represent as follows.
The Pin 61 is connected to 3.3 VSB voltage. W83627EHF/EHG monitors this voltage and the internal
two serial resistors are 34 KΩ and 34 KΩ so that input voltage to ADC is 1.65V which less than 2.048V
of ADC maximum input voltage.
7.3.2
voltage register multiplies 8mV. The formula is as the following:
7.3.3
The temperature data format is 8-bit two's-complement for sensor SYSTIN and 9-bit two's-complement
for sensor CPUTIN and AUXTIN. The 8-bit temperature data can be obtained by reading the Index[27h].
The 9-bit temperature data can be obtained by reading the 8 MSBs from the Bank1/Bank2 Index[50h]
and the LSB from the Bank1/Bank2 Index[51h] bit 7. The format of the temperature data is show in
Table 7.1.
The LSB of this mode is 8mV. This means that the detected voltage equals to the reading of this
W83627EHF/EHG provides one detection methods for CPUVCORE(pin 100).
TEMPERATURE
CPUVCORE voltage detection method
Temperature Measurement Machine
+125°C
+25°C
+1°C
+0.5°C
+0°C
Detected Voltage =
V
in
=
VCC
8-BIT BINARY
×
Reading ∗
0111,1101
0001,1001
0000,0001
-
0000,0000
8-BIT DIGITAL OUTPUT
34
K
34
Ω
+
K
Ω
34
. 0
008
K
Ω
W83627EHF/EF, W83627EHG/EG
8-BIT HEX
≅
7Dh
19h
01h
-
00h
- 38 -
V
. 1
65
V
, where VCC is set to 3.3V.
9-BIT BINARY
0,1111,1010
0,0011,0010
0,0000,0010
0,0000,0001
0,0000,0000
9-BIT DIGITAL OUTPUT
9-BIT HEX
0FAh
032h
002h
001h
000h