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SPC564A80B4 Folha de dados(PDF) 92 Page - STMicroelectronics

Nome de Peças SPC564A80B4
Descrição Electrónicos  Up to 4 multiply and accumulate operations per cycle
PDF  157 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
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SPC564A80B4 Folha de dados(HTML) 92 Page - STMicroelectronics

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Electrical characteristics
SPC564A74L7, SPC564A80B4, SPC564A80L7
92/157
Doc ID 15399 Rev 9
3.6.1
Regulator Example
In designs where the SPC564A80 microcontroller’s internal regulators are used, a ballast is
required for generation of the 1.2 V internal supply. No ballast is required when an external
1.2 V supply is used.
9
Por5V_r
CC
C
Nominal POR for rising 5 V
VDDREG supply
—2.67
—
V
9a
—
CC
C
Variation of POR for rising
5V VDDREG supply
Por5V_r
- 35%
Por5V_r
Por5V_r
+ 50%
V
9b
Por5V_f
CC
C
Nominal POR for falling 5 V
VDDREG supply
—2.47
—
V
9c
—
CC
C
Variation of POR for falling
5V VDDREG supply
Por5V_f
- 35%
Por5V_f
Por5V_f
+ 50%
V
1.
Using external ballast transistor.
2.
Min range is extended to 10% since Lvi1p2 is reprogrammed from 1.2 V to 1.16 V after power-on reset.
3.
LVI for falling supply is calculated as LVI rising – LVI hysteresis.
4.
Lvi1p2 tracks DC target variation of internal Vdd regulator. Minimum and maximum Lvi1p2 correspond to minimum and
maximum Vdd DC target respectively.
5.
Minimum loading (<10 mA) for reading trim values from flash, powering internal RC oscillator, and IO consumption during
POR.
6.
No external load is allowed, except for use as a reference for an external tool.
7.
This value is valid only when the internal regulator is bypassed. When the internal regulator is enabled, the maximum
external load allowed on the Nexus pads is 30 pF at 40 MHz.
8.
Lvi3p3 tracks DC target variation of internal Vdd33 regulator. Minimum and maximum Lvi3p3 correspond to minimum and
maximum Vdd33 DC target respectively.
Table 16.
PMC Electrical Characteristics (continued)
ID
Name
Parameter
Min
Typ
Max
Unit
Notes



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