参数资料
型号: SPC560B50L3-ENG
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-100
文件页数: 55/113页
文件大小: 983K
代理商: SPC560B50L3-ENG
Electrical characteristics
SPC560Bx, SPC560Cx
Doc ID 14619 Rev 7
Where:
TA is the ambient temperature in °C.
RJA is the package junction-to-ambient thermal resistance, in °C/W.
PD is the sum of PINT and PI/O (PD = PINT + PI/O).
PINT is the product of IDD and VDD, expressed in watts. This is the chip internal
power.
PI/O represents the power dissipation on input and output pins; user determined.
Most of the time for the applications, PI/O< PINT and may be neglected. On the other hand,
PI/O may be significant, if the device is configured to continuously drive external modules
and/or memories.
An approximate relationship between PD and TJ (if PI/O is neglected) is given by:
Equation 2
PD = K / (TJ + 273 °C)
Therefore, solving equations 1 and 2:
Equation 3
K = PD x (TA + 273 °C) + RJA x PD2
Where:
K is a constant for the particular part, which may be determined from Equation 3
by measuring PD (at equilibrium) for a known TA. Using this value of K, the values
of PD and TJ may be obtained by solving equations 1 and 2 iteratively for any value
of TA.
4.7
I/O pad electrical characteristics
4.7.1
I/O pad types
The device provides four main I/O pad types depending on the associated alternate
functions:
Slow pads—These pads are the most common pads, providing a good compromise
between transition time and low electromagnetic emission.
Medium pads—These pads provide transition fast enough for the serial communication
channels with controlled current to reduce electromagnetic emission.
Fast pads—These pads provide maximum speed. There are used for improved Nexus
debugging capability.
Input only pads—These pads are associated to ADC channels and the external 32 kHz
crystal oscillator (SXOSC) providing low input leakage.
Medium and Fast pads can use slow configuration to reduce electromagnetic emission, at
the cost of reducing AC performance.
4.7.2
I/O input DC characteristics
Table 12 provides input DC electrical characteristics as described in Figure 6.
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