MPC885ZP80 datasheet(52/92 Pages) FREESCALE

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MPC885/MPC880 Hardware Specifications, Rev. 3

Freescale Semiconductor

CPM Electrical Characteristics

12.5 Timer AC Electrical Specifications

Table 20 provides the general-purpose timer timings as shown in Figure 52.

Figure 52. CPM General-Purpose Timers Timing Diagram

12.6 Serial Interface AC Electrical Specifications

Table 21 provides the serial interface timings as shown in Figure 53 to Figure 57.

Table 20. Timer Timing

Num

Characteristic

All Frequencies

Unit

Min

Max

TIN/TGATE rise and fall time

—

TIN/TGATE low time

—

clk

TIN/TGATE high time

—

clk

TIN/TGATE cycle time

—

clk

CLKO low to TOUT valid

Table 21. SI Timing

Num

Characteristic

All Frequencies

Unit

Min

Max

L1RCLK, L1TCLK frequency (DSC = 0) 1, 2

—

SYNCCLK

/2.5

MHz

L1RCLK, L1TCLK width low (DSC = 0) 2

P + 10

—

71a

L1RCLK, L1TCLK width high (DSC = 0) 3

P + 10

—

L1TXD, L1ST(1–4), L1RQ, L1CLKO rise/fall time

—

15.00

L1RSYNC, L1TSYNC valid to L1CLK edge (SYNC setup time)

20.00

—

L1CLK edge to L1RSYNC, L1TSYNC, invalid (SYNC hold time)

35.00

—

CLKO

TIN/TGATE

(Input)

TOUT

(Output)

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