UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 935

• Manufacturer Part Number: UPD70F3451GC-UBT-A
• Description: MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

Specifications of UPD70F3451GC-UBT-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: CSI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 44
• 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, 4x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

18.5.2 Bus sizing function
the BSC register.
odd addresses.
The bus sizing function controls the data bus width for each CS space. The data bus width is specified by using
If a 16-bit bus width is specified, the lower 8 bits are used for even addresses and the higher 8 bits are used for
(1) Bus size configuration register (BSC)
This register controls the bus width of each CS space.
This register can be read or written in 16-bit units.
Reset sets this register to 5555H.
Caution Write to the BSC register after reset, and then do not change the set value. Also, when
Caution Be sure to set bits 1, 3, 5, 7, 9, 11, 13, and 15 to “0”, and set bits 4, 6, 8, 10, 12, and 14 to
CSn signal
CSn signal
After reset: 5555H
changing the initial values of the BSC register, do not access an external memory area until
the settings are complete. However, it is possible to access external memory areas whose
initialization settings are complete.
“1”. If they are set other than above, the operation is not guaranteed.
BSC
BSn0
15
0
0
7
0
1
8 bits
16 bits
CHAPTER 18 BUS CONTROL FUNCTION
R/W Address: FFFFF066H
14
1
1
6
Specification of data bus width of each CSn space (n = 0, 1)
User’s Manual U18279EJ3V0UD
13
0
5
0
12
1
1
4
11
0
3
0
BS10
CS1
10
1
2
9
0
1
0
BS00
CS0
1
8
0
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