MPC5553_07 datasheet(24/66 Pages) FREESCALE

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MPC5553 Microcontroller Data Sheet, Rev. 2.0

Electrical Characteristics

Freescale Semiconductor

Table 16 shows the FLASH_BIU settings versus frequency of operation. Refer to the device reference

manual for definitions of these bit fields.

3.12

AC Specifications

3.12.1

Pad AC Specifications

Table 16. FLASH_BIU Settings vs. Frequency of Operation

Maximum Frequency (MHz)

APC

RWSC

WWSC

DPFEN

IPFEN

PFLIM

BFEN

Up to and including 82 MHz1

1 Allows for 80 MHz system clock with 2% frequency modulation.

0b001

0b01

0b00,

0b01, or

0b112

2 For maximum flash performance, set to 0b11.

0b00,

0b01, or

0b112

0b000

0b1103

3 For maximum flash performance, set to 0b110.

0b0,

0b14

4 For maximum flash performance, set to 0b1.

Up to and including 102 MHz5

5 Allows for 100 MHz system clock with 2% frequency modulation.

0b001

0b010

0b01

0b00,

0b01, or

0b112

0b00,

0b01, or

0b112

0b000

0b1103

0b0,

0b14

Up to and including132 MHz6

6 Allows for 128 MHz system clock with 2% frequency modulation.

0b010

0b011

0b01

0b00,

0b01, or

0b112

0b00,

0b01, or

0b112

0b000

0b1103

0b0,

0b14

Default setting after reset

0b111

0b11

0b00

0b000

0b0

Table 17. Pad AC Specifications (VDDEH = 5.0 V, VDDE = 1.8 V)

Spec

Pad

SRC/DSC

(binary)

Out Delay2, 3, 4

(ns)

Rise / Fall4, 5

(ns)

Load Drive

(pF)

Slow high voltage (SH)

200

137

200

377

200

476

260

200

Medium high voltage (MH)

200

192

100

239

125

200

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