Electrical Characteristics
2.19 Debug AC Timing Specifications
Table 30 lists specifications for the debug AC timing parameters shown in Figure 21.
Table 30. Debug AC Timing Specification
66/80 MHz
Min Max
Num
Characteristic
Units
D1
D2
D3
D41
D5
D6
D7
D8
PST, DDATA to CLKOUT setup
4
1.5
—
—
ns
ns
ns
ns
ns
ns
ns
ns
CLKOUT to PST, DDATA hold
DSI-to-DSCLK setup
1 × tCYC
4 × tCYC
5 × tCYC
4
—
DSCLK-to-DSO hold
—
DSCLK cycle time
—
BKPT input data setup time to CLKOUT rise
BKPT input data hold time to CLKOUT rise
CLKOUT high to BKPT high Z
—
1.5
—
0.0
10.0
1
DSCLK and DSI are synchronized internally. D4 is measured from the synchronized DSCLK input relative to
the rising edge of CLKOUT.
Figure 20 shows real-time trace timing for the values in Table 30.
CLKOUT
D1
D2
PST[3:0]
DDATA[3:0]
Figure 20. Real-Time Trace AC Timing
MCF52259 ColdFire Microcontroller, Rev. 0
Freescale Semiconductor
47
FREESCALE [ Freescale ]
