HD6417032F20V Renesas Electronics America, HD6417032F20V Datasheet - Page 437
HD6417032F20V
Manufacturer Part Number
HD6417032F20V
Description
SH1 ROMLESS LEAD FREE
Manufacturer
Renesas Electronics America
Series
SuperH® SH7030r
Datasheet
1.HD6417034AFI20.pdf
(689 pages)
Specifications of HD6417032F20V
Core Processor
SH-1
Core Size
32-Bit
Speed
20MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
112-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417032F20V
Manufacturer:
TI
Quantity:
201
- Current page: 437 of 689
- Download datasheet (5Mb)
synchronizes internally with the falling edge of the start bit, which it samples on the base clock.
Receive data is latched on the rising edge of the eighth base clock pulse. See figure 13.21.
The receive margin in asynchronous mode can therefore be expressed as shown in equation 1.
Equation 1:
From equation (1), if F = 0 and D = 0.5 the receive margin is 46.875%, as given by equation 2.
Equation 2:
This is a theoretical value. A reasonable margin to allow in system designs is 20–30%.
Synchronization
data (RxD)
base clock
sampling
sampling
M = 0.5 –
M: Receive margin (%)
N: Ratio of clock frequency to bit rate (N = 16)
D: Clock duty cycle (D = 0 to 1.0)
L:
F:
D
M
Receive
Internal
timing
timing
Data
Figure 13.21 Receive Data Sampling Timing in Asynchronous Mode
Frame length (L = 9 to 12)
Absolute deviation of clock frequency
= 0.5, F = 0
= (0.5 – 1/(2
= 46.875%
0 1 2 3 4 5 6 7 8 9 10111213 1415 0 1 2 3 4 5 6 7 8 9 10111213 1415 0 1 2 3 4 5
2N
1
8 clocks
Start bit
– (L – 0.5)F –
(2)
16))
16 clocks
100%
–7.5 clocks
D
–
N
0.5
Section 13 Serial Communication Interface (SCI)
(1 + F )
+7.5 clocks
Rev. 7.00 Jan 31, 2006 page 409 of 658
100%
D0
REJ09B0272-0700
D1
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