SMJ320F240 Datasheet, PDF (65/99 Pages) Texas Instruments – DSP CONTROLLER

SMJ320F240
DSP CONTROLLER
low-power mode timings
SGUS029 – APRIL 1999
switching characteristics over recommended operating conditions₎ (see Figure 22, Figure 23,
Figure 24, and Figure 25)
td(WAKE-A)
td(IDLE-COH)
PARAMETER
LOW-POWER MODES
Delay time, CLKOUT switching to
program execution resume (see Note 3)
Idle 1 and Idle 2
PLL or OSC power down
Delay time, Idle instruction executed to Idle 2, PLL power down, OSC
CLKOUT high (see Note 3)
power down
MIN
TYP
MAX UNIT
15 X tc(CO)
ns
15 X tc(CI)
500
ns
td(WAKE-LOCK)Dsyenlacyhrotnimizee,d
CLKOUT
(see Note
switching
3)
to
PLL
PLL or OSC power down
td(WAKE-OSC)
Delay time, wakeup
oscillator running
interrupt
asserted
to
OSC power down
100
µs
10
ms
td(IDLE-OSC)
Delay time, Idle instruction executed to
oscillator power off
OSC power down
60
µs
NOTE 3: Timings assume CLKOUT is set to output CPUCLK. CLKOUT is initialized to CPUCLK by power-on reset.
A0–A15
td(WAKE–A)
CLKOUT/IOPC1
WAKE INT
Figure 22. IDLE1 Entry and Exit Timings
A0–A15
CLKOUT/IOPC1
WAKE INT
td(IDLE–COH)
td(WAKE–A)
Figure 23. IDLE2 Entry and Exit Timings
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