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MPC5553 数据表(PDF) 24 Page - Freescale Semiconductor, Inc

部件名 MPC5553
功能描述  Microcontroller Data Sheet
PDF  66 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

MPC5553 数据表(HTML) 24 Page - Freescale Semiconductor, Inc

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MPC5553 Microcontroller Data Sheet, Rev. 2.0
Electrical Characteristics
Freescale Semiconductor
24
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
0b001
0b01
0b00,
0b01, or
0b112
2 For maximum flash performance, set to 0b11.
0b00,
0b01, or
0b112
0b000
to
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
to
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
to
0b1103
0b0,
0b14
Default setting after reset
0b111
0b111
0b11
0b00
0b00
0b000
0b0
Table 17. Pad AC Specifications (VDDEH = 5.0 V, VDDE = 1.8 V)
1
Spec
Pad
SRC/DSC
(binary)
Out Delay2, 3, 4
(ns)
Rise / Fall4, 5
(ns)
Load Drive
(pF)
1
Slow high voltage (SH)
11
26
15
50
82
60
200
01
75
40
50
137
80
200
00
377
200
50
476
260
200
2
Medium high voltage (MH)
11
16
8
50
43
30
200
01
34
15
50
61
35
200
00
192
100
50
239
125
200



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