DF2328BVF25V Renesas Electronics America, DF2328BVF25V Datasheet - Page 753

• Manufacturer Part Number: DF2328BVF25V
• Description: IC H8S MCU FLASH 256K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2328BVF25V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: HD64F2328BVF25V

Permissible Signal Source Impedance: The chip’s analog input is designed so that conversion
precision is guaranteed for an input signal for which the signal source impedance is 5 kΩ or less.
This specification is provided to enable the A/D converter's sample-and-hold circuit input
capacitance to be charged within the sampling time; if the sensor output impedance exceeds 5 kΩ,
charging may be insufficient and it may not be possible to guarantee the A/D conversion
precision.
If a large capacitance is provided externally, the input load will essentially comprise only the
internal input resistance of 10 kΩ, and the signal source impedance is ignored. However, since a
low-pass filter effect is obtained in this case, it may not be possible to follow an analog signal with
a large differential coefficient (e.g., 5 mV/µs or greater).
When converting a high-speed analog signal, a low-impedance buffer should be inserted.
Figure 16.9 A/D Conversion Precision Definitions (2)
Digital output
Ideal A/D conversion
characteristic
Offset error
Section 16 A/D Converter (8 Analog Input Channel Version)
Actual A/D conversion
characteristic
Nonlinearity
error
Rev.6.00 Sep. 27, 2007 Page 721 of 1268
Full-scale error
Analog
input voltage
FS
REJ09B0220-0600