HD64F7144F50V Renesas Electronics America, HD64F7144F50V Datasheet - Page 478
HD64F7144F50V
Manufacturer Part Number
HD64F7144F50V
Description
IC SUPERH MCU FLASH 256K 112QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7144r
Specifications of HD64F7144F50V
Core Processor
SH-2
Core Size
32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
74
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
112-QFP
For Use With
HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)EDK7145 - DEV EVALUATION KIT SH7145
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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HD64F7144F50V
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13. Serial Communication Interface (SCI)
Figure 13.7 shows a sample flowchart for transmission in asynchronous mode.
Rev.4.00 Mar. 27, 2008 Page 432 of 882
REJ09B0108-0400
and clear TDRE flag in SSR to 0
as an output port with the PFC
Write transmit data to TDR
Clear TE bit in SCR to 0;
Read TDRE flag in SSR
Read TEND flag in SSR
All data transmitted?
Start transmission
select the TxD pin
Figure 13.7 Sample Serial Transmission Flowchart
Break output?
Clear DR to 0
Initialization
TDRE = 1
TEND = 1
<End>
Yes
Yes
Yes
Yes
No
No
No
No
[1]
[2]
[3]
[4]
[1] SCI initialization:
[2] SCI status check and transmit data
[3] Serial transmission continuation
[4] Break output at the end of serial
Set the TxD pin using the PFC.
After the TE bit is set to 1, a frame
period of 1s is output, and
transmission is enabled. This action
doesn't initiate immediate data
transmission.
write:
Read SSR and check that the
TDRE flag is set to 1, then write
transmit data to TDR and clear the
TDRE flag to 0.
procedure:
To continue serial transmission,
read 1 from the TDRE flag to
confirm that writing is possible, then
write data to TDR, and then clear
the TDRE flag to 0. Checking and
clearing of the TDRE flag is
automatic when the DMAC or DTC
is activated by a transmit data
empty interrupt (TXI) request, and
data is written to TDR.
transmission:
To output a break in serial
transmission, first clear the port
data register (DR) to 0, then clear
the TE bit to 0 in SCR and use the
PFC to select the TxD pin as an
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