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RX24T Datasheet, PDF (121/133 Pages) Renesas Technology Corp – 32-bit RXv2 CPU core | |||
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RX24T Group
5. Electrical Characteristics
Table 5.41 ROM (Flash Memory for Code Storage) Characteristics (3): Middle-Speed Operating Mode
Conditions: VCC = 2.7 V to 5.5 V, AVCC0 = AVCC1 = AVCC2 = VREF = VCC to 5.5 V, VSS = AVSS0 = AVSS1 = AVSS2 = 0 V
Temperature range for the programming/erasure operation: Ta = â40 to +85°C
FCLK = 1 MHz
FCLK = 8 MHz
Item
Symbol
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Programming time
8-byte
tP8
â
152.0
1367.0
â
97.9
936.0
μs
Erasure time
2-Kbyte
tE2K
â
8.8
279.7
â
5.9
220.8
ms
256-Kbyte
tE256K
â
469.2
9816.9
â
100.5
2260.1
ms
(when block
erase
command
used)
256-Kbyte
tEA256K
â
464.0
9610.7
â
(when all-
block erase
command
used)
95.3
2053.7
ms
512-Kbyte
(when block
erase
command
used)
tE512K
â
928.0 19221.2
â
190.6
4107.3 ms
512-Kbyte
tEA512K
â
922.7 19015.0
â
185.4
3901.0 ms
(when all-
block erase
command
used)
Blank check time
8-byte
2-Kbyte
Erase operation forcible stop time
Start-up area switching setting time
Access window time
ROM mode transition wait time 1
ROM mode transition wait time 2
tBC8
â
â
85.0
â
tBC2K
â
â
1870.0
â
tSED
â
â
28.0
â
tSAS
â
13.0
573.3
â
tAWS
â
13.0
573.3
â
tDIS
2.0
â
â
2.0
tMS
3.0
â
â
3.0
â
50.9
μs
â
401.5
μs
â
21.3
μs
7.7
450.1
ms
7.7
450.1
ms
â
â
μs
â
â
μs
Note:
Note:
Note:
Does not include the time until each operation of the flash memory is started after instructions are executed by software.
The lower-limit frequency of FCLK is 1 MHz during programming or erasing of the flash memory. When using FCLK at below
4 MHz, the frequency can be set to 1 MHz, 2 MHz, or 3 MHz. A non-integer frequency such as 1.5 MHz cannot be set.
The frequency accuracy of FCLK should be ±3.5%.
R01DS0257EJ0200 Rev.2.00
Apr 14, 2017
Page 121 of 133
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