HD64F2623FA20J Renesas Electronics America, HD64F2623FA20J Datasheet - Page 510

• Manufacturer Part Number: HD64F2623FA20J
• Description: IC H8S MCU FLASH 256K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2623FA20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 13 Serial Communication Interface (SCI)
Thus the reception margin in asynchronous mode is given by formula (1) below.
Where M: Reception margin (%)
Assuming values of F = 0 and D = 0.5 in formula (1), a reception margin of 46.875% is given by
formula (2) below.
When D = 0.5 and F = 0,
However, this is only the computed value, and a margin of 20% to 30% should be allowed in
system design.
Rev. 5.00 Jan 10, 2006 page 484 of 1042
REJ09B0275-0500
Internal basic
clock
Receive data
(RxD)
Synchronization
sampling timing
Data sampling
timing
N: Ratio of bit rate to clock (N = 16)
D: Clock duty (D = 0 to 1.0)
L: Frame length (L = 9 to 12)
F: Absolute value of clock rate deviation
M = | (0.5 –
M = (0.5 –
= 46.875%
Figure 13.21 Receive Data Sampling Timing in Asynchronous Mode
0
2
8 clocks
Start bit
2N
1
1
16
) – (L – 0.5) F –
16 clocks
100%
7
| D – 0.5 |
15 0
N
(1 + F) |
D0
100%
7
... Formula (2)
... Formula (1)
15 0
D1