DF70845AD80FPV Renesas Electronics America, DF70845AD80FPV Datasheet - Page 1335

• Manufacturer Part Number: DF70845AD80FPV
• Description: IC SUPERH MCU FLASH 112LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7080r

Specifications of DF70845AD80FPV

• Core Size: 32-Bit
• Program Memory Size: 512KB (512K x 8)
• Core Processor: SH-2
• Speed: 80MHz
• Connectivity: EBI/EMI, FIFO, I²C, SCI, SSU
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• No. Of I/o's: 76
• Ram Memory Size: 32KB
• Cpu Speed: 80MHz
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 3V To 3.6V, 4.5V To 5.5V
• Embedded Interface Type: I2C, SCI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: R0K570865S001BE - KIT STARTER FOR SH7086R0K570865S000BE - KIT STARTER FOR SH7086HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

23.8
23.8.1
It is possible to switch between the user MAT and user boot MAT. However, the following
procedure is required because these MATs are allocated to address 0.
(Switching to the user boot MAT disables programming and erasing. Programming of the user
boot MAT must take place in boot mode or programmer mode.)
1. MAT switching by FMATS should always be executed from the on-chip RAM. The SH
2. To ensure that the MAT that has been switched to is accessible, execute four NOP instructions
3. If an interrupt occurs during switching, there is no guarantee of which memory MAT is being
4. After the MATs have been switched, take care because the interrupt vector table will also have
5. Memory sizes of the user MAT and user boot MAT are different. When accessing the user
microcomputer prefetches execution instructions. Therefore, a switchover during program
execution in the user MAT causes an instruction code in the user MAT to be prefetched or an
instruction in the newly selected user boot MAT to be prefetched, thus resulting in unstable
operation.
in on-chip RAM immediately after writing to FMATS of on-chip RAM (this prevents access to
the flash memory during MAT switching).
accessed.
Always mask the maskable interrupts before switching MATs. In addition, configuring the
system so that NMI interrupts do not occur during MAT switching is recommended.
been switched.
If the same interrupt processings are to be executed before and after MAT switching or
interrupt requests cannot be disabled, transfer the interrupt processing routine to on-chip RAM,
and use the VBR setting to place the interrupt vector table in on chip RAM. In this case, make
sure the VBR setting change does not conflict with the interrupt occurrence.
boot MAT, do not access addresses exceeding the 12-kbyte memory space. If access goes
beyond the 12-kbyte space, the values read are undefined.
Usage Notes
Switching between User MAT and User Boot MAT
Rev. 3.00 May 17, 2007 Page 1277 of 1582
Section 23 Flash Memory
REJ09B0181-0300