TMS320F28335, TMS320F28334, TMS320F28332
TMS320F28235, TMS320F28234, TMS320F28232
SPRS439M –JUNE 2007–REVISED AUGUST 2012
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6.17 Flash Timing
Table 6-65. Flash Endurance for A and S Temperature Material(1)
ERASE/PROGRAM
TEMPERATURE
MIN
TYP
MAX
UNIT
Nf
Flash endurance for the array (write/erase cycles)
OTP endurance for the array (write cycles)
0°C to 85°C (ambient)
0°C to 85°C (ambient)
20000
50000
cycles
write
NOTP
1
(1) Write/erase operations outside of the temperature ranges indicated are not specified and may affect the endurance numbers.
Table 6-66. Flash Endurance for Q Temperature Material(1)
ERASE/PROGRAM
MIN
TYP
MAX
UNIT
TEMPERATURE
Nf
Flash endurance for the array (write/erase cycles)
OTP endurance for the array (write cycles)
–40°C to 125°C (ambient)
–40°C to 125°C (ambient)
20000
50000
cycles
write
NOTP
1
(1) Write/erase operations outside of the temperature ranges indicated are not specified and may affect the endurance numbers.
Table 6-67. Flash Parameters at 150-MHz SYSCLKOUT
TEST
CONDITIONS
PARAMETER
MIN
TYP
MAX
UNIT
Program Time 16-Bit Word
32K Sector
50
1000
500
2
μs
ms
ms
s
16K Sector
Erase Time(1) 32K Sector
16K Sector
2
s
(2)
IDD3VFLP
VDD3VFL current consumption during the Erase/Program Erase
cycle
75
mA
mA
mA
mA
Program
35
(2)
IDDP
VDD current consumption during Erase/Program cycle
VDDIO current consumption during Erase/Program cycle
180
20
(2)
IDDIOP
(1) The on-chip flash memory is in an erased state when the device is shipped from TI. As such, erasing the flash memory is not required
prior to programming, when programming the device for the first time. However, the erase operation is needed on all subsequent
programming operations.
(2) Typical parameters as seen at room temperature including function call overhead, with all peripherals off.
Table 6-68. Flash/OTP Access Timing
PARAMETER
MIN
37
MAX UNIT
ta(fp)
Paged Flash access time
Random Flash access time
OTP access time
ns
ns
ns
ta(fr)
37
ta(OTP)
60
Table 6-69. Flash Data Retention Duration
PARAMETER
Data retention duration
TEST CONDITIONS
TJ = 55°C
MIN
15
MAX UNIT
tretention
years
182
Electrical Specifications
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