![](http://datasheet.mmic.net.cn/390000/TMS320C10-14_datasheet_16838598/TMS320C10-14_20.png)
RL = 825
,
CL = 100 pF,
(see Figure 2)
TMS320C10-14
DIGITAL SIGNAL PROCESSORS
SPRS009C–JANUARY 1987–REVISED JULY 1991
POST OFFICE BOX 1443
HOUSTON, TEXAS 77001
20
electrical characteristics over specified temperature range (unless otherwise noted)
PARAMETER
Supply current
TEST CONDITIONS
MIN
TYP
MAX
UNIT
mA
ICC
All typical values are at TA = 70
°
C and are used for thermal resistance calculations.
ICC characteristics are inversely proportional to temperature; i.e., ICC decreases approximately linearly with temperature.
f = 14.4, MHz, VCC = 5.5 V, TA = 0
°
C to 70
°
C
28
65
CLOCK CHARACTERISTICS AND TIMING
The TMS320C10-14 can use either its internal oscillator or an external frequency source for a clock.
internal clock option
The internal oscillator is enabled by connecting a crystal across X1 and X2/CLKIN (see Figure 1). The frequency
of CLKOUT is one-fourth the crystal fundamental frequency. The crystal should be fundamental mode, and
parallel resonant, with an effective series resistance of 30 ohms, a power dissipation of 1 mW, and be specified
at a load capacitance of 20 pF.
PARAMETER
TEST CONDITIONS
TA = 0
°
C to 70
°
C
TA = 0
°
C to 70
°
C
MIN
NOM
MAX
UNIT
Crystal frequency, fx
C1, C2
6.7
14.4
MHz
10
pF
external clock option
An external frequency source can be used by injecting the frequency directly into X2/CLKIN with X1 left
unconnected. The external frequency injected must conform to the specifications listed in the table below.
switching characteristics over recommended operating conditions
TEST CONDITIONS
MIN
NOM
MAX
UNIT
tc(C)
tr(C)
tf(C)
tw(CL)
tw(CH)
td(MCC)
CLKOUT cycle time§
277.78
ns
CLKOUT rise time
10
ns
CLKOUT fall time
8
ns
Pulse duration, CLKOUT low
131
ns
Pulse duration, CLKOUT high
Delay time, CLKIN
↑
to CLKOUT
↓
129
ns
25
60
ns
§tc(C) is the cycle time of CLKOUT, i.e., 4tc(MC) (4 times CLKIN cycle time if an external oscillator is used).
Values derived from characterization data and not tested.
timing requirements over recommended operating conditions
MIN
NOM
MAX
UNIT
tc(MC)
tr(MC)
tf(MC)
tw(MCP)
tw(MCL)
tw(MCH)
Values derived from characterization data and not tested.
Master clock cycle time
69.5
150
10
10
ns
Rise time, master clock input
5
5
ns
Fall time, master clock input
ns
Pulse duration, master clock
0.4tc(MC)
0.6tc(MC)
20
20
ns
Pulse duration, master clock low, tc(MC) = 50 ns
Pulse duration, master clock high, tc(MC) = 50 ns
ns
ns