MPC8568E datasheet(91/139 Pages) FREESCALE

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MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

SPI

18 SPI

This section describes the DC and AC electrical specifications for the SPI of the MPC8568E.

18.1

SPI DC Electrical Characteristics

Table 69 provides the DC electrical characteristics for the MPC8568E SPI.

18.2

SPI AC Timing Specifications

Table 70 and provide the SPI input and output AC timing specifications.

Figure 57 provides the AC test load for the SPI.

Figure 57. SPI AC Test Load

Table 69. SPI DC Electrical Characteristics

Characteristic

Symbol

Condition

Min

Max

Unit

Output high voltage

VOH

IOH = –6.0 mA

2.4

—

Output low voltage

VOL

IOL = 6.0 mA

—

0.5

Output low voltage

VOL

IOL = 3.2 mA

—

0.4

Input high voltage

VIH

—2.0

OVDD+0.3

Input low voltage

VIL

—-0.3

0.8

Input current

IIN

0 V

≤ VIN ≤ OVDD

—

± 10

μA

Table 70. SPI AC Timing Specifications 1

Characteristic

Symbol 2

Min

Max

Unit

SPI outputs—Master mode (internal clock) delay

tNIKHOV

SPI outputs—Slave mode (external clock) delay

tNEKHOV

SPI inputs—Master mode (internal clock) input setup time

tNIIVKH

4—

SPI inputs—Master mode (internal clock) input hold time

tNIIXKH

0—

SPI inputs—Slave mode (external clock) input setup time

tNEIVKH

4—

SPI inputs—Slave mode (external clock) input hold time

tNEIXKH

2—

Notes:

1. Output specifications are measured from the 50% level of the rising edge of CLKIN to the 50% level of the signal.

Timings are measured at the pin.

2. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)

(reference)(state) for inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example,

tNIKHOV symbolizes the NMSI outputs internal timing (NI) for the time tSPI memory clock reference (K) goes from

the high state (H) until outputs (O) are valid (V).

Output

Z0 = 50 Ω

OVDD/2

RL = 50 Ω

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