HD64F3048F16 Renesas Electronics America, HD64F3048F16 Datasheet - Page 580
HD64F3048F16
Manufacturer Part Number
HD64F3048F16
Description
IC H8 MCU FLASH 128K 100QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of HD64F3048F16
Core Processor
H8/300H
Core Size
16-Bit
Speed
8MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, PWM, WDT
Number Of I /o
70
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-QFP
Package
100PQFP
Family Name
H8
Maximum Speed
16 MHz
Operating Supply Voltage
5 V
Data Bus Width
16|32 Bit
Number Of Programmable I/os
70
Interface Type
SCI
On-chip Adc
8-chx10-bit
On-chip Dac
2-chx8-bit
Number Of Timers
5
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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- Current page: 580 of 907
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Section 15 A/D Converter
8. Allowable Signal-Source Impedance: The analog inputs of the H8/3048 Group are designed to
Rev. 7.00 Sep 21, 2005 page 554 of 878
REJ09B0259-0700
assure accurate conversion of input signals with a signal-source impedance not exceeding 10
k . The reason for this rating is that it enables the input capacitor in the sample-and-hold
circuit in the A/D converter to charge within the sampling time. If the sensor output impedance
exceeds 10 k , charging may be inadequate and the accuracy of A/D conversion cannot be
guaranteed.
If a large external capacitor is provided in scan mode, then the internal 10-k input resistance
becomes the only significant load on the input. In this case the impedance of the signal source
is not a problem.
A large external capacitor, however, acts as a low-pass filter. This may make it impossible to
track analog signals with high dv/dt (e.g. a variation of 5 mV/µs) (figure 15.11). To convert
high-speed analog signals or to use scan mode, insert a low-impedance buffer.
Figure 15.10 A/D Converter Accuracy Definitions (2)
Digital
output
characteristic
conversion
Ideal A/D
Offset error
Actual A/D conversion
characteristic
Nonlinearity
error
Analog input
voltage
Full-scale
error
FS
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