HD6473837H Renesas Electronics America, HD6473837H Datasheet - Page 308
HD6473837H
Manufacturer Part Number
HD6473837H
Description
IC H8 MCU OTP 60K 100QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Lr
Datasheet
1.HD6473837HV.pdf
(562 pages)
Specifications of HD6473837H
Core Processor
H8/300L
Core Size
8-Bit
Speed
5MHz
Connectivity
SCI
Peripherals
LCD, PWM
Number Of I /o
84
Program Memory Size
60KB (60K x 8)
Program Memory Type
OTP
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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10.4.7
SCI3 has six interrupt sources: transmit end, transmit data empty, receive data full, and the three
receive error interrupts (overrun error, framing error, and parity error). All share a common
interrupt vector. Table 10.18 describes each interrupt.
Table 10.18 SCI3 Interrupts
Interrupt
RXI
TXI
TEI
ERI
The interrupt requests are enabled and disabled by bits TIE and RIE of SCR3.
When bit TDRE in SSR is set to 1, TXI is requested. When bit TEND in SSR is set to 1, TEI is
requested. These two interrupt requests occur during data transmission.
The initial value of bit TDRE is 1. Accordingly, if the transmit data empty interrupt request (TXI)
is enabled by setting bit TIE to 1 in SCR3 before placing transmit data in TDR, TXI will be
requested even though no transmit data has been readied.
Likewise, the initial value of bit TEND is 1. Accordingly, if the transmit end interrupt request
(TEI) is enabled by setting bit TEIE to 1 in SCR3 before placing transmit data in TDR, TEI will be
requested even though no data has been transmitted.
These interrupt features can be used to advantage by programming the interrupt handler to move
the transmit data into TDR. When this technique is not used, the interrupt enable bits (TIE and
TEIE) should not be set to 1 until after TDR has been loaded with transmit data, to avoid
unwanted TXI and TEI interrupts.
When bit RDRF in SSR is set to 1, RXI is requested. When any of SSR bits OER, FER, or PER is
set to 1, ERI is requested. These two interrupt requests occur during the receiving of data.
Details on interrupts are given in 3.3, Interrupts.
Interrupts
Description
Interrupt request due to receive data register full (RDRF)
Interrupt request due to transmit data register empty (TDRE)
Interrupt request due to transmit end (TEND)
Interrupt request due to receive error (OER, FER, or PER)
Vector Address
H'0024
291
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