SM320F28335-EP_12 Datasheet, PDF (157/167 Pages) Texas Instruments – Digital Signal Controller (DSC)

SM320F28335-EP
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SPRS581D – JUNE 2009 – REVISED MAY 2012
For all SPI slave modes, CLKX must be a minimum of 8 CLKG cycles. Also CLKG should be LSPCLK/2
by setting CLKSM = CLKGDV = 1. With maximum LSPCLK speed of 75 MHz, CLKX maximum frequency
is LSPCLK/16 , that is 4.6875 MHz and P = 13.3 ns.
Table 6-63. McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 11b, CLKXP = 1)⁽¹⁾
NO.
PARAMETER
M53
M54
M56
t_h(CKXH-FXL)
t_d(FXL-CKXL)
t_{dis(CKXH-DXHZ)}
Hold time, FSX low after CLKX high
Delay time, FSX low to CLKX low
Disable time, DX high impedance following last data bit from
CLKX high
M57 t_d(FXL-DXV)
Delay time, FSX low to DX valid
(1) 2P = 1/CLKG
(2) C = CLKX low pulse width = P
D = CLKX high pulse width = P
MASTER ⁽²⁾
MIN MAX
P
2P ⁽¹⁾
P+6
SLAVE
MIN MAX
7P + 6
UNIT
ns
ns
ns
6
4P + 6
ns
CLKX
FSX
DX
DR
LSB
M60
MSB
M61
M53
M54
M56
Bit 0
Bit 0
M57
M58
Bit(n-1)
Bit(n-1)
M55
(n-2)
M59
(n-2)
(n-3)
(n-3)
(n-4)
(n-4)
Figure 6-41. McBSP Timing as SPI Master or Slave: CLKSTP = 11b, CLKXP = 1
6.17 Flash Timing
Table 6-64. Flash Endurance for A and S Temperature Material⁽¹⁾
MIN
TYP MAX
UNIT
N_f Flash endurance for the array (write/erase cycles)
N_OTP OTP endurance for the array (write cycles)
0°C to 85°C (ambient)
0°C to 85°C (ambient)
100
1000
1
cycles
write
(1) Write/erase operations outside of the temperature ranges indicated are not specified and may affect the endurance numbers.
Table 6-65. Flash Endurance for Q Temperature Material⁽¹⁾
MIN
TYP MAX
UNIT
N_f Flash endurance for the array (write/erase cycles)
N_OTP OTP endurance for the array (write cycles)
– 40°C to 125°C (ambient) 100
– 40°C to 125°C (ambient)
1000
1
cycles
write
(1) Write/erase operations outside of the temperature ranges indicated are not specified and may affect the endurance numbers.
Table 6-66. Flash Parameters at 150-MHz SYSCLKOUT
PARAMETER
Program Time
Erase Time
16-Bit Word
32K Sector
16K Sector
32K Sector
16K Sector
TEST
CONDITIONS
MIN
TYP
50
1000
500
11
11
MAX
UNIT
μs
ms
ms
s
s
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