UPD70F3714GC-8BS-A Renesas Electronics America, UPD70F3714GC-8BS-A Datasheet - Page 630

• Manufacturer Part Number: UPD70F3714GC-8BS-A
• Description: MCU 32BIT V850ES/LX2 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Ix2r

Specifications of UPD70F3714GC-8BS-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, UART/USART
• Peripherals: LVD, PWM, WDT
• Number Of I /o: 39
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• 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 Features
628
(1) Secure self programming (boot swap function) (
(2) Interrupt support
The
with the physical memory of blocks 2 and 3. By writing the start program to be rewritten to blocks 2 and 3 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 and 1.
Instructions cannot be fetched from the flash memory during self programming. Conventionally, therefore, a
user handler written to the flash memory could not be used even if an interrupt occurred. With the V850ES/IE2,
a user handler can be registered to an entry RAM area by using a library function, so that interrupt servicing
can be performed by internal RAM or external memory execution.
μ
PD70F3714 supports a boot swap function that can exchange the physical memory of blocks 0 and 1
Block
Block
Block
Block
3
2
1
0
Figure 18-16. Rewriting Entire Memory Area (Boot Swap)
Rewriting blocks
2 and 3
CHAPTER 18 FLASH MEMORY
User’s Manual U17716EJ2V0UD
Block
Block
Block
Block
μ
3
2
1
0
PD70F3714 only)
Boot swap
Block
Block
Block
Block
3
2
1
0