UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 192

• Manufacturer Part Number: UPD70F3738GF-GAS-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3738GF-GAS-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

5.5.3
bus size is as follows.
side.
190
The V850ES/JG3-L accesses the on-chip peripheral I/O and external memory in 8-bit, 16-bit, or 32-bit units. The
• The bus size of the on-chip peripheral I/O is fixed to 16 bits.
• The bus size of the external memory is selectable from 8 bits or 16 bits (by using the BSC register).
The operation when each of the above is accessed is described below. All data is accessed starting from the lower
The V850ES/JG3-L supports only the little endian format.
(1) Data space
The V850ES/JG3-L has an address misalign function.
With this function, data can be placed at all addresses, regardless of the format of the data (word data or
halfword data). However, if the word data or halfword data is not aligned at the boundary, redundant bus
cycles are generated, causing the bus efficiency to drop.
Examples of an 8-bit, 16-bit, and 32-bit access are shown below.
Access according to bus size
31
000BH
0007H
0003H
Figure 5-2. Little Endian Address in Word Data
24 23
CHAPTER 5 BUS CONTROL FUNCTION
User’s Manual U18953EJ5V0UD
000AH
0006H
0002H
16 15
0009H
0005H
0001H
8 7
0008H
0004H
0000H
0