DF2338VFC25IV Renesas Electronics America, DF2338VFC25IV Datasheet - Page 727

• Manufacturer Part Number: DF2338VFC25IV
• Description: MCU 3V 256K I-TEMP PB-FREE 144-Q
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2338VFC25IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 106
• 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 12x10b; D/A 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Thus the receive margin in asynchronous mode is given by the following formula.
Where M: Receive margin (%)
Assuming values of F = 0, D = 0.5, and N = 372 in the above formula, the receive margin formula
is as follows.
When D = 0.5 and F = 0,
M = (0.5 – 1/2 × 372) × 100%
N: Ratio of bit rate to clock (N = 32, 64, 372, 256)
D: Clock duty (D = 0 to 1.0)
L: Frame length (L = 10)
F: Absolute value of clock frequency deviation
M =⎥ (0.5 –
= 49.866%
2N
1
) – (L – 0.5) F –
⎥ D – 0.5⎥
N
Rev.4.00 Sep. 07, 2007 Page 695 of 1210
(1 + F)⎥ × 100%
REJ09B0245-0400