DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 644

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 14 Serial Communication Interface (SCI)
14.8
14.8.1
Table 14.12 shows the interrupt sources in normal serial communication interface mode. A
different interrupt vector is assigned to each interrupt source, and individual interrupt sources can
be enabled or disabled using the enable bits in SCR.
When the TDRE flag in SSR is set to 1, a TXI interrupt request is generated. When the TEND flag
in SSR is set to 1, a TEI interrupt request is generated. A TXI interrupt request can activate the
DMAC or DTC to allow data transfer. The TDRE flag is automatically cleared to 0 at data transfer
by the DMAC or DTC.
When the RDRF flag in SSR is set to 1, an RXI interrupt request is generated. When the ORER,
PER, or FER flag in SSR is set to 1, an ERI interrupt request is generated. An RXI interrupt can
activate the DMAC or DTC to allow data transfer. The RDRF flag is automatically cleared to 0 at
data transfer by the DMAC or DTC.
A TEI interrupt is requested when the TEND flag is set to 1 while the TEIE bit is set to 1. If a TEI
interrupt and a TXI interrupt are requested simultaneously, the TXI interrupt has priority for
acceptance. However, note that if the TDRE and TEND flags are cleared to 0 simultaneously by
the TXI interrupt processing routine, the SCI cannot branch to the TEI interrupt processing routine
later.
Table 14.12 SCI Interrupt Sources
Rev. 2.00 Jun. 28, 2007 Page 618 of 864
REJ09B0341-0200
Name
ERI
RXI
TXI
TEI
Interrupt Sources
Interrupts in Normal Serial Communication Interface Mode
Interrupt Source
Receive error
Receive data full
Transmit data empty
Transmit end
Interrupt Flag
ORER, FER, or
PER
RDRF
TDRE
TEND
DTC
Activation
Not possible
Possible
Possible
Not possible
DMAC
Activation
Not possible
Possible
Possible
Not possible
Priority
High
Low