HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 558

• 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: -

Section 13 Serial Communication Interface (SCI)
• Reception
Page 508 of 1458
Receive operation should be stopped (by clearing RE to 0) before making a module stop mode,
software standby mode, watch mode, subactive mode, or subsleep mode transition. RSR, RDR,
and SSR are reset. If a transition is made without stopping operation, the data being received
will be invalid.
To continue receiving without changing the reception mode after the relevant mode is cleared,
set RE to 1 before starting reception. To receive with a different receive mode, the procedure
must be started again from initialization.
Figure 13-26 shows a sample flowchart for mode transition during reception.
Figure 13-23 Sample Flowchart for Mode Transition during Transmission
Read TEND flag in SSR
<Start of transmission>
Transition to software
standby mode, etc.
standby mode, etc.
Exit from software
operating mode?
<Transmission>
Yes
Yes
Yes
transmitted?
Initialization
TEND = 1
Change
All data
TE = 0
[2]
No
No
No
TE = 1
[1]
[3]
[1] Data being transmitted is
[2] If TIE and TEIE are set to 1, clear
[3] Includes module stop mode, watch
interrupted. After exiting software
standby mode, etc., normal CPU
transmission is possible by setting
TE to 1, reading SSR, writing TDR,
and clearing TDRE to 0, but note
that if the DTC has been activated,
the remaining data in DTCRAM will
be transmitted when TE and TIE
are set to 1.
them to 0 in the same way.
mode, subactive mode, and sub-
sleep mode.
H8S/2639, H8S/2638, H8S/2636,
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
May 28, 2010