參數(shù)資料
型號: TMS320C240PQL
英文描述: 16-Bit Microcontroller
中文描述: 16位微控制器
文件頁數(shù): 63/105頁
文件大?。?/td> 1481K
代理商: TMS320C240PQL
TMS320C240, TMS320F240
DSP CONTROLLERS
SPRS042D – OCTOBER 1996 – REVISED NOVEMBER 1998
63
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
PARAMETER MEASUREMENT INFORMATION
Tester Pin
Electronics
VLOAD
IOL
CT
IOH
Output
Under
Test
50
Where:
IOL
IOH
VLOAD
CT
=
=
=
=
2 mA (all outputs)
300
μ
A (all outputs)
1.5 V
110-pF typical load-circuit capacitance
Figure 17. Test Load Circuit
signal transition levels
The data in this section is shown for the 5-V version (’C2xx). Note that some of the signals use different reference
voltages, see the recommended operating conditions table. TTL-output levels are driven to a minimum
logic-high level of 2.4 V and to a maximum logic-low level of 0.7 V.
Figure 18 shows the TTL-level outputs.
0.7 V
20%
2.4 V
80%
Figure 18. TTL-Level Outputs
TTL-compatible output transition times are specified as follows:
For a high-to-low transition the level at which the output is said to be no longer high is below 80% of the
total voltage range and lower, and the level at which the output is said to be low is 20% of the total voltage
range and lower.
For a low-to-high transition the level at which the output is said to be no longer low is 20% of the total voltage
range and higher, and the level at which the output is said to be high is 80% of the total voltage range and
higher.
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