UPD70F3453GC-8EA-A Renesas Electronics America, UPD70F3453GC-8EA-A Datasheet - Page 960

• Manufacturer Part Number: UPD70F3453GC-8EA-A
• Description: MCU 32BIT 128KB FLASH 100LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

Specifications of UPD70F3453GC-8EA-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 56
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 10x12b, 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

18.9 Bus Priority Order
access.
18.10 Boundary Operation Conditions
18.10.1 Program space
and fetching from the external memory is not performed.
18.10.2 Data space
the case of word data and halfword data, however, the bus cycle will be generated at least twice if data is not aligned
to the boundary, which causes the bus efficiency to drop.
958
There are two external bus cycles: instruction fetch and operand data access.
In order of priority, operand data access is the higher and instruction fetch is the lower.
However, an instruction fetch may be inserted between a read access and write access during a read modify write
Branching to the on-chip peripheral I/O area is prohibited. If the above is performed, undefined data is fetched,
The
Through this function, data can be allocated to all addresses, regardless of the data format (word or halfword). In
(1) In the case of halfword-length data access
(2) In the case of word-length data access
μ
When the address’s LSB is 1, a byte-length bus cycle will be generated 2 times.
(a) When the address’s LSB is 1, bus cycles will be generated in the order of byte-length bus cycle,
(b) When the address’s lower 2 bits are 10, a halfword-length bus cycle will be generated 2 times.
PD70F3454GC-8EA-A and 70F3454F1-DA9-A are provided with an address misalign function.
halfword-length bus cycle, and byte-length bus cycle.
Priority Order
High
Low
CHAPTER 18 BUS CONTROL FUNCTION
Table 18-3. Bus Priority Order
Operand data access
Instruction fetch
User’s Manual U18279EJ3V0UD
External Bus Cycle
CPU
CPU
Bus Master