HD6417720BP133BV Renesas Electronics America, HD6417720BP133BV Datasheet - Page 1009
HD6417720BP133BV
Manufacturer Part Number
HD6417720BP133BV
Description
SH3-DSP, WITH USB AND LCDC, PB-F
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.R8A77210C133BAV.pdf
(1478 pages)
Specifications of HD6417720BP133BV
Core Processor
SH-3 DSP
Core Size
32-Bit
Speed
133MHz
Connectivity
FIFO, I²C, IrDA, MMC, SCI, SD, SIO, SIM, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
117
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Data Converters
A/D 4x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
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SH7720 Group, SH7721 Group
27.7.4
For the analog input design of this LSI, conversion accuracy is guaranteed for an input signal with
signal-source impedance of 5 kΩ or less. The specification is for charging input capacitance of the
sample and hold circuit of the A/D converter within sampling time. When the output impedance of
the sensor exceeds 5 kΩ, conversion accuracy is not guaranteed due to insufficient charging. If
large external capacitance is set at conversion in single mode, signal-source impedance is ignored
since input load is only internal input resistance of 3 kΩ. However, an analog signal with large
differential coefficient (5 mV/μs or greater) cannot be followed up because of a low-pass filter
(figure 27.8). When converting high-speed analog signals or converting in scan mode, insert a
low-impedance buffer.
27.7.5
By adding capacitance, absolute accuracy may be degraded if noise is on GND because there is
coupling with GND. Therefore, connect electrically stable GND such as AVss to prevent absolute
accuracy from being degraded.
A filter circuit must not interfere with digital signals, or must not be an antenna on a mounting
board.
R01UH0083EJ0400 Rev. 4.00
Sep 21, 2010
Allowable Signal-Source Impedance
Influence to Absolute Accuracy
Sensor input
Output impedance of sensor
Lowpass
filter
(C = 0.1μF)
to 5 kΩ
Figure 27.8 Analog Input Circuit Example
This LSI
C
15 pF
in
=
Equivalent circuit
of A/D converter
3 kΩ
20 pF
Section 27 A/D Converter
Page 949 of 1414
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