R5F61662N50FPV Renesas Electronics America, R5F61662N50FPV Datasheet - Page 695
R5F61662N50FPV
Manufacturer Part Number
R5F61662N50FPV
Description
MCU 24KB FLASH 384K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8SX/1600r
Datasheet
1.R0K561622S000BE.pdf
(1070 pages)
Specifications of R5F61662N50FPV
Core Processor
H8SX
Core Size
16/32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
92
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
40K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F61662N50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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16.7.4
Only the internal clock generated by the on-chip baud rate generator can be used as a transfer
clock in smart card interface mode. In this mode, the SCI can operate on a basic clock with a
frequency of 32, 64, 372, or 256 times the bit rate according to the BCP1 and BCP0 bit settings
(the frequency is always 16 times the bit rate in normal asynchronous mode). At reception, the
falling edge of the start bit is sampled using the basic clock in order to perform internal
synchronization. Receive data is sampled on the 16th, 32nd, 186th and 128th rising edges of the
basic clock so that it can be latched at the middle of each bit as shown in figure 16.25. The
reception margin here is determined by the following formula.
Assuming values of F = 0, D = 0.5, and N = 372 in the above formula, the reception margin is
determined by the formula below.
Internal
basic clock
Receive data
(RxD)
Synchronization
sampling timing
Data sampling
timing
Figure 16.25 Receive Data Sampling Timing in Smart Card Interface Mode
M: Reception margin (%)
N: Ratio of bit rate to clock (N = 32, 64, 372, 256)
D: Duty cycle of clock (D = 0 to 1.0)
L: Frame length (L = 10)
F: Absolute value of clock frequency deviation
M =
M = | (0.5 –
Receive Data Sampling Timing and Reception Margin
( 0.5 –
(When Clock Frequency is 372 Times the Bit Rate)
2 × 372
0
2N
1
186 clock
cycles
1
) – (L – 0.5) F –
372 clock cycles
185
) × 100% = 49.866%
Start bit
371
| D – 0.5 |
0
N
D0
Section 16 Serial Communication Interface (SCI)
(1 + F ) | × 100%
Rev. 2.00 Sep. 16, 2009 Page 665 of 1036
185
371 0
REJ09B0414-0200
D1
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