HD64F3694FY Renesas Electronics America, HD64F3694FY Datasheet - Page 235
HD64F3694FY
Manufacturer Part Number
HD64F3694FY
Description
IC H8 MCU FLASH 32K 48-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300H Tinyr
Datasheet
1.HD64F3694GFYV.pdf
(452 pages)
Specifications of HD64F3694FY
Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SCI
Peripherals
PWM, WDT
Number Of I /o
29
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD64F3694FYJV
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Company:
Part Number:
HD64F3694FYV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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14.4
Figure 14.2 shows the general format for asynchronous serial communication. One frame consists
of a start bit (low level), followed by data (in LSB-first order), a parity bit (high or low level), and
finally stop bits (high level). Inside the SCI3, the transmitter and receiver are independent units,
enabling full duplex. Both the transmitter and the receiver also have a double-buffered structure,
so data can be read or written during transmission or reception, enabling continuous data transfer.
14.4.1
Either an internal clock generated by the on-chip baud rate generator or an external clock input at
the SCK3 pin can be selected as the SCI3’s serial clock source, according to the setting of the
COM bit in SMR and the CKE0 and CKE1 bits in SCR3. When an external clock is input at the
SCK3 pin, the clock frequency should be 16 times the bit rate used.
When the SCI3 is operated on an internal clock, the clock can be output from the SCK3 pin. The
frequency of the clock output in this case is equal to the bit rate, and the phase is such that the
rising edge of the clock is in the middle of the transmit data, as shown in figure 14.3.
Clock
Serial data
Serial
data
Figure 14.3 Relationship between Output Clock and Transfer Data Phase
Operation in Asynchronous Mode
Clock
(Asynchronous Mode) (Example with 8-Bit Data, Parity, Two Stop Bits)
Start
bit
1 bit
Figure 14.2 Data Format in Asynchronous Communication
LSB
0
D0
One unit of transfer data (character or frame)
D1
Transmit/receive data
D2
7 or 8 bits
D3
1 character (frame)
D4
D5
Section 14 Serial Communication Interface 3 (SCI3)
D6
MSB
D7
Rev.5.00 Nov. 02, 2005 Page 205 of 418
Parity
bit
1 bit,
or none
0/1
1
Stop bit
1 or
2 bits
1
Mark state
REJ09B0028-0500
1
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