HD64F3644PV Renesas Electronics America, HD64F3644PV Datasheet - Page 358

IC H8/3644 MCU FLASH 32K 64SDIP

HD64F3644PV

Manufacturer Part Number
HD64F3644PV
Description
IC H8/3644 MCU FLASH 32K 64SDIP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Lr
Datasheet

Specifications of HD64F3644PV

Core Processor
H8/300L
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
PWM, WDT
Number Of I /o
53
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
64-SDIP (0.750", 19.05mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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Part Number:
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25
Section 10 Serial Communication Interface
10.3.7
SCI3 can generate six kinds of interrupts: transmit end, transmit data empty, receive data full, and
three receive error interrupts (overrun error, framing error, and parity error). These interrupts have
the same vector address.
The various interrupt requests are shown in table 10.16.
Table 10.16 SCI3 Interrupt Requests
Interrupt
Abbreviation
RXI
TXI
TEI
ERI
Each interrupt request can be enabled or disabled by means of bits TIE and RIE in SCR3.
When bit TDRE is set to 1 in SSR, a TXI interrupt is requested. When bit TEND is set to 1 in
SSR, a TEI interrupt is requested. These two interrupts are generated during transmission.
The initial value of bit TDRE in SSR is 1. Therefore, if the transmit data empty interrupt request
(TXI) is enabled by setting bit TIE to 1 in SCR3 before transmit data is transferred to TDR, a TXI
interrupt will be requested even if the transmit data is not ready.
Also, the initial value of bit TEND in SSR is 1. Therefore, if the transmit end interrupt request
(TEI) is enabled by setting bit TEIE to 1 in SCR3 before transmit data is transferred to TDR, a TEI
interrupt will be requested even if the transmit data has not been sent.
Effective use of these interrupt requests can be made by having processing that transfers transmit
data to TDR carried out in the interrupt service routine.
To prevent the generation of these interrupt requests (TXI and TEI), on the other hand, the enable
bits for these interrupt requests (bits TIE and TEIE) should be set to 1 after transmit data has been
transferred to TDR.
When bit RDRF is set to 1 in SSR, an RXI interrupt is requested, and if any of bits OER, PER, and
FER is set to 1, an ERI interrupt is requested. These two interrupt requests are generated during
reception.
Rev. 6.00 Sep 12, 2006 page 336 of 526
REJ09B0326-0600
Interrupts
Interrupt Request
Interrupt request initiated by receive data full flag (RDRF)
Interrupt request initiated by transmit data empty flag (TDRE)
Interrupt request initiated by transmit end flag (TEND)
Interrupt request initiated by receive error flag (OER, FER,
PER)
Vector Address
H'002A

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