HD64F7145F50V Renesas Electronics America, HD64F7145F50V Datasheet - Page 724
![IC SUPERH MCU FLASH 256K 144QFP](/photos/12/22/122200/hd64f7145f50v_sml.jpg)
HD64F7145F50V
Manufacturer Part Number
HD64F7145F50V
Description
IC SUPERH MCU FLASH 256K 144QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7144r
Specifications of HD64F7145F50V
Core Processor
SH-2
Core Size
32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
98
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
For Use With
HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)EDK7145 - DEV EVALUATION KIT SH7145
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F7145F50V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
HD64F7145F50V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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19. Flash Memory (F-ZTAT Version)
19.8.2
When erasing flash memory, the erase/erase-verify flowchart shown in figure 19.10 should be
followed.
1. Prewriting (setting erase block data to all 0s) is not necessary.
2. Erasing is performed in block units. Make only a single-bit specification in the erase block
3. The time during which the E bit is set to 1 is the flash memory erase time.
4. The watchdog timer (WDT) is set to prevent overerasing due to program runaway, etc. An
5. For a dummy write to a verify address, write 1-byte data H'FF to the read address. Verify data
6. If the read data is not erased successfully, set erase mode again, and repeat the erase/erase-
19.8.3
All interrupts, including the NMI interrupt, are disabled while flash memory is being programmed
or erased, or while the boot program is executing, for the following three reasons:
1. An interrupt during programming/erasing may cause a violation of the programming or erasing
2. If an interrupt exception handling starts before the vector address is written or during
3. If an interrupt occurs during boot program execution, normal boot mode sequence cannot be
Rev.4.00 Mar. 27, 2008 Page 678 of 882
REJ09B0108-0400
register 1 (EBR1) and the erase block register 2 (EBR2). To erase multiple blocks, each block
must be erased in turn.
overflow cycle of approximately 19.8 ms is allowed.
can be read in longwords from the address to which a dummy write was performed.
verify sequence as before. The number of repetitions of the erase/erase-verify sequence should
not exceed the maximum number of erasing (N).
algorithm, with the result that normal operation cannot be assured.
programming/erasing, a correct vector cannot be fetched and the CPU malfunctions.
carried out.
Erase/Erase-Verify Mode
Interrupt Handling when Programming/Erasing Flash Memory
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