Datasheet

MPC852T PowerQUICC™ Hardware Specifications, Rev. 4

48 Freescale Semiconductor

CPM Electrical Characteristics

14.4 Timer AC Electrical Specifications

Table 19 provides the general-purpose timer timings as shown in Figure 46.

Figure 46. CPM General-Purpose Timers Timing Diagram

14.5 SCC in NMSI Mode Electrical Specifications

Table 20 provides the NMSI external clock timing.

Table 19. Timer Timing

Num Characteristic

All Frequencies

Unit

Min Max

61 TIN/TGATE

rise and fall time 10 — ns

62 TIN/TGATE

low time 1 — clk

63 TIN/TGATE

high time 2 — clk

64 TIN/TGATE

cycle time 3 — clk

65 CLKO low to TOUT

valid 3 25 ns

Table 20. NMSI External Clock Timing

Num Characteristic

All Frequencies

Unit

Min Max

100 RCLK3 and TCLK3 width high

1/SYNCCLK — ns

101 RCLK3 and TCLK3 width low 1/SYNCCLK + 5 — ns

102 RCLK3 and TCLK3 rise/fall time — 15.00 ns

103 TXD3 active delay (from TCLK3 falling edge) 0.00 50.00 ns

104 RTS3

active/inactive delay (from TCLK3 falling edge) 0.00 50.00 ns

105 CTS3

setup time to TCLK3 rising edge 5.00 — ns

106 RXD3 setup time to RCLK3 rising edge 5.00 — ns

CLKO

TIN/TGATE

(Input)

TOUT

(Output)

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