HD64F7144F50V Renesas Electronics America, HD64F7144F50V Datasheet - Page 207
HD64F7144F50V
Manufacturer Part Number
HD64F7144F50V
Description
IC SUPERH MCU FLASH 256K 112QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7144r
Specifications of HD64F7144F50V
Core Processor
SH-2
Core Size
32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
74
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
112-QFP
For Use With
HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)EDK7145 - DEV EVALUATION KIT SH7145
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F7144F50V
Manufacturer:
RENESAS
Quantity:
450
Company:
Part Number:
HD64F7144F50V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
HD64F7144F50V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
- Current page: 207 of 932
- Download datasheet (6Mb)
9. Bus State Controller (BSC)
9.8
Bus Arbitration
This LSI has a bus arbitration function that, when a bus release request is received from an
external device, releases the bus to that device. It also has four internal bus masters, the CPU,
DMAC, DTC, and AUD. The priority for arbitrate the bus mastership between these bus masters
is:
Bus request from external device > AUD > DTC > DMAC > CPU
AUD does not acquire the bus mastership during DTC or DMAC burst transfer; it acquires the bus
mastership after DTC or DMAC burst transfer. AUD has the priority for the bus mastership to
DTC and DMAC if the CPU has the bus mastership. DMAC, continues operating even if DTC
requests the bus mastership during the read or the write period in DMAC dual address mode,
during burst transfer, or during operation in indirect address transfer mode.
A bus request by an external device should be input to the BREQ pin. When the BREQ pin is
asserted, this LSI releases the bus immediately after executing the current bus cycle. The signal
indicating that the bus has been released is output from the BACK pin.
However, the bus arbitration is not performed at the timing between the read cycle and the write
cycle of TAS instruction. In addition, bus arbitration is not performed during bus cycle if the
access size is greater than the data-bus size, for example, when a long-word access is made for an
8-bit size memory.
When an interrupt is generated and the CPU must process this interrupt, the LSI must take back
the bus mastership. For this purpose, this LSI has the IRQOUT pin used for the bus mastership
request signal. Before the LSI takes back the bus mastership, the IRQOUT signal is asserted.
When the IRQOUT signal is asserted, the device that asserted the external bus release request
negates the BREQ signal to release the bus mastership. This allows the bus mastership to return to
the CPU, and the LSI processes the interrupt. The IRQOUT pin is asserted when a cause of
interrupt is generated and the interrupt request level is higher than the interrupt mask bits (I3 to I0)
of the status register (SR).
Figure 9.9 shows a bus mastership release procedure.
Rev.4.00 Mar. 27, 2008 Page 161 of 882
REJ09B0108-0400
Related parts for HD64F7144F50V
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
KIT STARTER FOR M16C/29
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C/2D
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
R0K33062P STARTER KIT
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C/23 E8A
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C/25
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER H8S2456 SHARPE DSPLY
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C38C
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C35C
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8CL3AC+LCD APPS
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR RX610
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R32C/118
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT DEV RSK-R8C/26-29
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR SH7124
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR H8SX/1622
Manufacturer:
Renesas Electronics America
Datasheet: