MC56F8037EVM Freescale Semiconductor, MC56F8037EVM Datasheet - Page 165

• Manufacturer Part Number: MC56F8037EVM
• Description: BOARD EVAL FOR MC56F8037
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of MC56F8037EVM

• Contents: Board, Cables, CD, Debugger
• Silicon Manufacturer: Freescale
• Core Architecture: 56800/E
• Core Sub-architecture: 56800/E
• Silicon Core Number: MC56F
• Silicon Family Name: MC56F80xx
• Kit Contents: MC56F8037EVM, USB-JTAG Adapter, Cables, CD
• Rohs Compliant: Yes
• For Use With/related Products: MC56F8037
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.19 Power Consumption
See
detail which can be used to optimize power consumption for a given application.
Power consumption is given by the following equation:
A, the internal [static component], is comprised of the DC bias currents for the oscillator, leakage currents,
PLL, and voltage references. These sources operate independently of processor state or operating
frequency.
B, the internal [state-dependent component], reflects the supply current required by certain on-chip
resources only when those resources are in use. These include RAM, Flash memory and the ADCs.
C, the internal [dynamic component], is classic C*V
56800E core and standard cell logic.
D, the external [dynamic component], reflects power dissipated on-chip as a result of capacitive loading
on the external pins of the chip. This is also commonly described as C*V
of the I/O cell types used on the 56800E reveal that the power-versus-load curve does have a non-zero
Y-intercept.
Power due to capacitive loading on output pins is (first order) a function of the capacitive load and
frequency at which the outputs change.
in the I/O cells as a function of capacitive load. In these cases:
where:
Freescale Semiconductor
Total power =
•
•
•
Section 10.1
Summation is performed over all output pins with capacitive loads
TotalPower is expressed in mW
Cload is expressed in pF
for a list of IDD requirements for the 56F8037/56F8027. This section provides additional
+D: external [dynamic component]
+B: internal [state-dependent component]
+C: internal [dynamic component]
+E: external [static component]
A: internal [static component]
TotalPower = ((Intercept + Slope*Cload)*frequency/10MHz)
Table 10-23 I/O Loading Coefficients at 10MHz
8mA drive
4mA drive
56F8037/56F8027 Data Sheet, Rev. 7
Table 10-23
provides coefficients for calculating power dissipated
2
Intercept
1.15mW
*F CMOS power dissipation corresponding to the
1.3
0.11mW / pF
0.11mW / pF
Slope
2
*F, although simulations on two
Power Consumption
165