HD64F2168VTE33 Renesas Electronics America, HD64F2168VTE33 Datasheet - Page 441
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HD64F2168VTE33
Manufacturer Part Number
HD64F2168VTE33
Description
Manufacturer
Renesas Electronics America
Datasheet
1.HD64F2168VTE33.pdf
(876 pages)
Specifications of HD64F2168VTE33
Cpu Family
H8S
Device Core Size
16/32Bit
Frequency (max)
33MHz
Interface Type
I2C/IrDA/SCI
Program Memory Type
Flash
Program Memory Size
256KB
Total Internal Ram Size
40KB
# I/os (max)
106
Number Of Timers - General Purpose
5
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
3V
On-chip Adc
8-chx10-bit
On-chip Dac
2-chx8-bit
Instruction Set Architecture
CISC
Operating Temp Range
-20C to 75C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
144
Package Type
TQFP
Lead Free Status / Rohs Status
Not Compliant
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14.6
Figure 14.17 shows the general format for clock synchronous communication. In clock
synchronous mode, data is transmitted or received in synchronization with clock pulses. One
character in transfer data consists of 8-bit data. In data transmission, the SCI outputs data from one
falling edge of the synchronization clock to the next. In data reception, the SCI receives data in
synchronization with the rising edge of the synchronization clock. After 8-bit data is output, the
transmission line holds the MSB state. In clock synchronous mode, no parity or multiprocessor bit
is added. Inside the SCI, the transmitter and receiver are independent units, enabling full-duplex
communication by use of a common clock. Both the transmitter and the receiver also have a
double-buffered structure, so that the next transmit data can be written during transmission or the
previous receive data can be read during reception, enabling continuous data transfer.
14.6.1
Either an internal clock generated by the on-chip baud rate generator or an external
synchronization clock input at the SCK pin can be selected, according to the setting of the CKE1
and CKE0 bits in SCR. When the SCI is operated on an internal clock, the synchronization clock
is output from the SCK pin. Eight synchronization clock pulses are output in the transfer of one
character, and when no transfer is performed the clock is fixed high.
Synchronization
clock
Serial data
Note: * High except in continuous transfer
Operation in Clock Synchronous Mode
Clock
Figure 14.17 Data Format in Synchronous Communication (LSB-First)
Don’t care
*
LSB
Bit 0
One unit of transfer data (character or frame)
Bit 1
Bit 2
Bit 3
Bit 4
Rev. 3.00, 03/04, page 399 of 830
Bit 5
Bit 6
MSB
Bit 7
Don’t care
*
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