HD64F2168VTE33 Renesas Electronics America, HD64F2168VTE33 Datasheet - Page 429
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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14.4.6
Figure 14.9 shows an example of the operation for transmission in asynchronous mode. In
transmission, the SCI operates as described below.
1. The SCI monitors the TDRE flag in SSR, and if it is cleared to 0, recognizes that data has been
2. After transferring data from TDR to TSR, the SCI sets the TDRE flag to 1 and starts
3. Data is sent from the TxD pin in the following order: start bit, transmit data, parity bit or
4. The SCI checks the TDRE flag at the timing for sending the stop bit.
5. If the TDRE flag is 0, the data is transferred from TDR to TSR, the stop bit is sent, and then
6. If the TDRE flag is 1, the TEND flag in SSR is set to 1, the stop bit is sent, and then the “mark
Figure 14.10 shows a sample flowchart for transmission in asynchronous mode.
Figure 14.9 Example of Operation in Transmission in Asynchronous Mode (Example with
written to TDR, and transfers the data from TDR to TSR.
transmission. If the TIE bit in SCR is set to 1 at this time, a transmit data empty interrupt
request (TXI) is generated. Because the TXI interrupt routine writes the next transmit data to
TDR before transmission of the current transmit data has finished, continuous transmission can
be enabled.
multiprocessor bit (may be omitted depending on the format), and stop bit.
serial transmission of the next frame is started.
state” is entered in which 1 is output. If the TEIE bit in SCR is set to 1 at this time, a TEI
interrupt request is generated.
TXI interrupt
request generated
TDRE
TEND
Serial Data Transmission (Asynchronous Mode)
1
Start
bit
0
Data written to TDR and
TDRE flag cleared to 0 in
TXI interrupt service routine
D0
D1
1 frame
Data
8-Bit Data, Parity, One Stop Bit)
D7
Parity
bit
0/1
TXI interrupt
request generated
Stop
bit
1
Start
bit
0
D0
D1
Data
Rev. 3.00, 03/04, page 387 of 830
D7
Parity
bit
TEI interrupt
request generated
0/1
Stop
bit
1
Idle state
(mark state)
1
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