AFS600-FGG256 Actel, AFS600-FGG256 Datasheet - Page 114

• Manufacturer Part Number: AFS600-FGG256
• Description: FPGA - Field Programmable Gate Array 600K System Gates
• Manufacturer: Actel

Specifications of AFS600-FGG256

• Processor Series: AFS600
• Core: IP Core
• Maximum Operating Frequency: 1098.9 MHz
• Number Of Programmable I/os: 119
• Data Ram Size: 110592
• Supply Voltage (max): 1.575 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Development Tools By Supplier: AFS-Eval-Kit, AFS-BRD600, FlashPro 3, FlashPro Lite, Silicon-Explorer II, Silicon-Sculptor 3, SI-EX-TCA
• Mounting Style: SMD/SMT
• Supply Voltage (min): 1.425 V
• Number Of Gates: 600 K
• Package / Case: FPBGA-256
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Device Architecture
2- 98
The diode’s voltage is measured at each current level and the temperature is calculated based on
where
When I
In the Fusion TMB, the ideality factor n for 2N3904 is 1.004 and ΔV is amplified 12.5 times by an internal
amplifier; hence the voltage before entering the ADC is as given in
This means the temperature to voltage relationship is 2.5 mV per degree Kelvin. The unique design of
Fusion has made the Temperature Monitor System simple for the user. When the 10-bit mode ADC is
used, each LSB represents 1 degree Kelvin, as shown in
represented by decimal 293 counts from the ADC.
If 8-bit mode is used for the ADC resolution, each LSB represents 4 degrees Kelvin; however, the
resolution remains as 1 degree Kelvin per LSB, even for 12-bit mode, due to the Temperature Monitor
design. An example of the temperature data format for 10-bit mode is shown in
Table 2-38 • Temperature Data Format
Temperature
–40°C
–20°C
0°C
1°C
10 °C
25°C
50 °C
85 °C
I
I
V
V
n is the non-ideality factor of the diode-connected transistor. It is typically 1.004 for the Actel-
recommended transistor type 2N3904.
K = 1.3806 x 10
Q = 1.602 x 10
TMSLO
TMSHI
TMSLO
TMSHI
TMSLO
is the current when the Temperature Strobe is High, typically 10 µA
is the current when the Temperature Strobe is Low, typically 100 µA
is diode voltage while Temperature Strobe is High
is diode voltage while Temperature Strobe is Low
/ I
TMSHI
-19
-23
C is the charge of a proton
= 10, the equation can be simplified as shown in
J/K is the Boltzman constant
ΔV
V
V
ADC
=
TMSLO
1K
Temperature (K)
V
TMSLO
=
=
ΔV 12.5
2.5 mV
–
233
253
273
274
283
298
323
358
V
R e visio n 1
–
×
TMSHI
V
TMSHI
×
---------------- -
2.56 V
=
=
2
n
10
=
2.5 mV
kT
------ - ln
q
EQ
1.986 10
⎛
⎝
=
10. That is, e. 25°C is equal to 293°K and is
I
-----------------
1 LSB
I
TMSLO
TMSHI
⁄
×
(
K T
EQ
×
–
⎞
⎠
4
)
nT
9.
EQ
(ADC 10-bit mode)
8.
Digital Output
01 0001 0001
01 0001 0010
01 0010 1010
00 1110 1001
01 0001 1011
01 0100 0011
01 0110 0110
00 1111 1101
Table
2-38.
EQ 10
EQ
EQ 7
EQ 8
EQ 9
7.