Техническая Спецификация для Freescale Semiconductor Evaluation Board for MPC5500 Series MPC5554EVBE MPC5554EVBE
Модели
MPC5554EVBE
MPC5554 Microcontroller Data Sheet, Rev. 4
Electrical Characteristics
Freescale Semiconductor
24
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
1
1
Illegal combinations exist. Use entries from the same row in this table.
Maximum Frequency (MHz)
APC
RWSC
WWSC
DPFEN
2
2
For maximum flash performance, set to 0b11.
IPFEN
PFLIM
3
3
For maximum flash performance, set to 0b110.
BFEN
4
4
For maximum flash performance, set to 0b1.
Up to and including 82 MHz
5
5
82 MHz parts allow for 80 MHz system clock + 2% frequency modulation (FM).
0b001
0b001
0b01
0b00
0b01
0b11
0b01
0b11
0b00
0b01
0b11
0b01
0b11
0b000
to
0b110
0b0
0b1
Up to and including 102 MHz
6
6
102 MHz parts allow for 100 MHz system clock + 2% FM.
0b001
0b010
0b01
0b00
0b01
0b11
0b01
0b11
0b00
0b01
0b11
0b01
0b11
0b000
to
0b110
0b0
0b1
0b1
Up to and including 132 MHz
7
7
132 MHz parts allow for 128 MHz system clock + 2% FM.
0b010
0b011
0b01
0b00
0b01
0b11
0b01
0b11
0b00
0b01
0b11
0b01
0b11
0b000
to
0b110
0b0
0b1
0b1
Default setting after reset
0b111
0b111
0b11
0b00
0b00
0b000
0b0
Table 17. Pad AC Specifications (V
DDEH
= 5.0 V, V
DDE
= 1.8 V)
1
Spec
Pad
SRC / DSC
(binary)
Out Delay
2, 3, 4
(ns)
(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