HD64F2319VTE25 Renesas Electronics America, HD64F2319VTE25 Datasheet - Page 561

• Manufacturer Part Number: HD64F2319VTE25
• Description: IC H8S MCU FLASH 512K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of HD64F2319VTE25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 71
• Program Memory Size: 512KB (512K 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: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-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,
Internal
base
clock
Receive
data (RxD)
Synchro-
nization
sampling
timing
Data
sampling
timing
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%
Figure 13.10 Receive Data Sampling Timing in Smart Card Mode
0
186 clocks
2N
185
1
372 clocks
Start bit
) – (L – 0.5) F –
(When Using 372-Times Clock)
371
0
⎥ D – 0.5⎥
D0
N
Rev.7.00 Feb. 14, 2007 page 527 of 1108
(1 + F)⎥ × 100%
185
Section 13 Smart Card Interface
371 0
REJ09B0089-0700
D1