UPD70F3771GF-GAT-AX Renesas Electronics America, UPD70F3771GF-GAT-AX Datasheet - Page 1383

• Manufacturer Part Number: UPD70F3771GF-GAT-AX
• Description: MCU 32BIT V850ES/JX3-H 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Hr

Specifications of UPD70F3771GF-GAT-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 48MHz
• Connectivity: CAN, CSI, EBI/EMI, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 2.85 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: -

V850ES/JG3-H, V850ES/JH3-H
31.5.2 Features
R01UH0042EJ0400 Rev.4.00
Sep 30, 2010
(1) Secure self programming (boot swap function)
(2) Interrupt support
The V850ES/JG3-H and V850ES/JH3-H support a boot swap function that can exchange the physical memory of
blocks 0 to 15 with the physical memory of blocks 16 to 31. By writing the start program to be rewritten to blocks
16 to 31 in advance and then swapping the physical memory, the entire area can be safely rewritten even if a
power failure occurs during rewriting because the correct user program always exists in blocks 0 to 15.
Instructions cannot be fetched from the flash memory during self-programming. Consequently, a user handler
written to the flash memory could not be used even if an interrupt has occurred.
Therefore, in the V850ES/JG3-H and V850ES/JH3-H, to use an interrupt during self-programming, processing
transits to the specific address
user interrupt servicing at the specific address
Note NMI interrupt:
Last block
Block 32
Block 31
Block 17
Block 16
Block 15
Maskable interrupt: Start address of internal RAM + 4 addresses
Block 1
Block 0
:
:
:
Figure 31-17. Rewriting Entire Memory Area (Boot Swap)
Rewriting blocks
Start address of internal RAM
16 to 31
Note
in the internal RAM. Allocate the jump instruction that transits processing to the
Note
Last block
in the internal RAM.
Block 32
Block 31
Block 17
Block 16
Block 15
Block 1
Block 0
:
:
:
Boot swap
CHAPTER 31 FLASH MEMORY
Last block
Block 32
Block 31
Block 17
Block 16
Block 15
Block 1
Block 0
:
:
:
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