UPD70F3737GC-UEU-AX Renesas Electronics America, UPD70F3737GC-UEU-AX Datasheet - Page 772

• Manufacturer Part Number: UPD70F3737GC-UEU-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3737GC-UEU-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 20MHz
• Number Of I /o: 84
• Core Processor: RISC
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Program Memory Size: 128KB (128K x 8)
• Data Converters: A/D 12x10b, D/A 2x8b
• Oscillator Type: Internal
• Peripherals: DMA, LVD, PWM, WDT
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Core Size: 32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

28.5.2 Features
772
(1) Secure self programming (boot swap function)
(2) Interrupt support
The V850ES/JG3-L supports 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-L, to use an interrupt during self-programming, processing transits to the
specific address
interrupt servicing at the specific address
Note NMI interrupt: Start address of internal RAM
Last block
Block 32
Block 31
Block 17
Block 16
Block 15
Block 1
Block 0
Maskable interrupt: Start address of internal RAM + 4 addresses
:
:
:
Note
in the internal RAM. Allocate the jump instruction that transits processing to the user
Figure 28-17. Rewriting Entire Memory Area (Boot Swap)
Rewriting blocks
16 to 31
Preliminary User’s Manual U18953EJ1V0UD
CHAPTER 28 FLASH MEMORY
Note
in the internal RAM.
Last block
Block 32
Block 31
Block 17
Block 16
Block 15
Block 1
Block 0
:
:
:
Boot swap
Last block
Block 32
Block 31
Block 17
Block 16
Block 15
Block 1
Block 0
:
:
: