D12312SVF20V Renesas Electronics America, D12312SVF20V Datasheet - Page 524

• Manufacturer Part Number: D12312SVF20V
• Description: IC H8S/2312S MCU ROMLESS 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVF20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 12 Serial Communication Interface (SCI)
12.4
The SCI has four interrupt sources: the transmit-end interrupt (TEI) request, receive-error interrupt
(ERI) request, receive-data-full interrupt (RXI) request, and transmit-data-empty interrupt (TXI)
request. Table 12.12 shows the interrupt sources and their relative priorities. Individual interrupt
sources can be enabled or disabled with the TIE, RIE, and TEIE bits in the SCR. Each kind of
interrupt request is sent to the interrupt controller independently.
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 can activate the DTC to
perform data transfer. The TDRE flag is cleared to 0 automatically when data transfer is
performed by the DTC. The DTC cannot be activated by a TEI interrupt request.
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 DTC to perform data transfer. The RDRF flag is cleared to 0 automatically when data
transfer is performed by the DTC. The DTC cannot be activated by an ERI interrupt request.
Table 12.12 SCI Interrupt Sources
Channel
0
1
Note: * This table shows the initial state immediate after a reset. Relative priorities among channels
Rev.7.00 Feb. 14, 2007 page 490 of 1108
REJ09B0089-0700
can be changed by the interrupt controller.
SCI Interrupts
Interrupt
Source
ERI
RXI
TXI
TEI
ERI
RXI
TXI
TEI
Description
Interrupt due to receive error
(ORER, FER, or PER)
Interrupt due to receive data full state
(RDRF)
Interrupt due to transmit data empty state
(TDRE)
Interrupt due to transmission end
(TEND)
Interrupt due to receive error
(ORER, FER, or PER)
Interrupt due to receive data full state
(RDRF)
Interrupt due to transmit data empty state
(TDRE)
Interrupt due to transmission end
(TEND)
DTC
Activation
Not
possible
Possible
Possible
Not
possible
Not
possible
Possible
Possible
Not
possible
Priority *
High
Low