参数资料
型号: SMQ320C32PCMM50
厂商: TEXAS INSTRUMENTS INC
元件分类: 数字信号处理
英文描述: 24-BIT, 50 MHz, OTHER DSP, PQFP144
封装: PLASTIC, QFP-144
文件页数: 14/50页
文件大小: 674K
代理商: SMQ320C32PCMM50
SMQ320C32
DIGITAL SIGNAL PROCESSOR
SGUS027B – APRIL 1998 – REVISED MARCH 1999
21
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
timings for CLKIN [Q = tc(CI)] (see Figure 14)
NO
TEST
’320C32-50
’320C32-60
UNIT
NO.
CONDITIONS
MIN
MAX
MIN
MAX
UNIT
1
tf(CI)
Fall time, CLKIN
5*
4*
ns
2
tw(CIL)
Pulse duration, CLKIN low
Q = min
7
6
ns
3
tw(CIH)
Pulse duration, CLKIN high
Q = min
8
6
ns
4
tr(CI)
Rise time, CLKIN
5*
4*
ns
5
tc(CI)
Cycle time, CLKIN
20
303
16.67
303
ns
Minimum CLKIN high-pulse duration at 3.3 MHz is 10 ns.
* This parameter is not production tested.
1
4
CLKIN
5
2
3
Figure 14. CLKIN Timing
switching characteristics for H1 and H3 over recommended operating conditions (unless
otherwise noted) (see Figure 15)
NO
PARAMETER
TEST
’320C32-50
’320C32-60
UNIT
NO.
PARAMETER
CONDITIONS
MIN
MAX
MIN
MAX
UNIT
6
tf(H)
Fall time, H1 / H3
3
ns
7
tw(HL)
Pulse duration, H1 / H3 low
Q–5
Q–4
ns
8
tw(HH)
Pulse duration, H1 / H3 high
Q–6
Q–5
ns
9
tr(H)
Rise time, H1 / H3
3
ns
9.1
td(HL-HH)
Delay time, H1 / H3 low to H1 / H3 high
0*
4
0*
4
ns
10
tc(H)
Cycle time, H1 / H3
40
606
33.33
606
ns
* This parameter is not production tested.
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