HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 501

• Manufacturer Part Number: HD64F2638F20J
• Description: IC H8S MCU FLASH 256K 128-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2638F20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
13.2.3
TSR is a register used to transmit serial data.
To perform serial data transmission, the SCI first transfers transmit data from TDR to TSR, then
sends the data to the TxD pin starting with the LSB (bit 0).
When transmission of one byte is completed, the next transmit data is transferred from TDR to
TSR, and transmission started, automatically. However, data transfer from TDR to TSR is not
performed if the TDRE bit in SSR is set to 1.
TSR cannot be directly read or written to by the CPU.
13.2.4
TDR is an 8-bit register that stores data for serial transmission.
When the SCI detects that TSR is empty, it transfers the transmit data written in TDR to TSR and
starts serial transmission. Continuous serial transmission can be carried out by writing the next
transmit data to TDR during serial transmission of the data in TSR.
TDR can be read or written to by the CPU at all times.
TDR is initialized to H'FF by a reset, in standby mode, watch mode * , subactive mode * , and
subsleep mode * or module stop mode.
Note: * Subclock functions (subactive mode, subsleep mode, and watch mode) are available in the
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Bit
Initial value
R/W
Bit
R/W
U-mask and W-mask versions, and H8S/2635 Group only.
These functions cannot be used with the other versions.
Transmit Data Register (TDR)
Transmit Shift Register (TSR)
:
:
:
:
:
⎯
7
R/W
7
1
⎯
6
R/W
6
1
⎯
5
R/W
5
1
⎯
4
R/W
4
1
⎯
3
R/W
Section 13 Serial Communication Interface (SCI)
3
1
⎯
2
R/W
2
1
⎯
1
R/W
1
1
Page 451 of 1458
⎯
0
R/W
0
1