MPC855T datasheet(49/80 Pages) FREESCALE

49 / 80 page

MPC860 Family Hardware Specifications, Rev. 7

Freescale Semiconductor

CPM Electrical Characteristics

11.5 Timer AC Electrical Specifications

Table 18 provides the general-purpose timer timings as shown in Figure 49.

Figure 49. CPM General-Purpose Timers Timing Diagram

11.6 Serial Interface AC Electrical Specifications

Table 19 provides the serial interface timings as shown in Figure 50 through Figure 54.

Table 18. 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 19. 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)

MPC855T データシート(PDF) 49 Page - Freescale Semiconductor, Inc

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