參數(shù)資料
型號(hào)： PC7457MGU1000L
廠商： Atmel Corp.
英文描述： PowerPC 7457 RISC Microprocessor
中文描述： 7457的PowerPC RISC微處理器
文件頁(yè)數(shù)： 19/66頁(yè)
文件大小： 522K
代理商： PC7457MGU1000L
19
PC7457/47 [Preliminary]
5345B–HIREL–02/04
3. Maximum power is the average measured at nominal V
DD
and maximum operating
junction temperature (see Table 3 on page 12) while running an entirely cache-resi-
dent, contrived sequence of instructions which keep all the execution units maximally
busy.
4. Doze mode is not a user-definable state; it is an intermediate state between full-
power and either nap or sleep mode. As a result, power consumption for this mode is
not tested.
Electrical
Characteristics
Static Characteristics
Table 7 provides the DC electrical characteristics for the PC7457
.
Notes:
1. Nominal voltages; see Table 3 on page 12 for recommended operating conditions.
2. For processor bus signals, the reference is OV
DD
while GV
DD
is the reference for the L3 bus signals.
3. Excludes test signals and IEEE 1149.1 boundary scan (JTAG) signals.
4. The leakage is measured for nominal OV
DD
/GV
DD
and V
DD
, or both OV
DD
/GV
DD
and V
DD
must vary in the same direction (for
example, both OV
DD
and V
DD
vary by either +5% or -5%).
5. Capacitance is periodically sampled rather than 100% tested.
6. Applicable to L3 bus interface only
Table 7.
DC Electrical Specifications (see Table 3 on page 12 for Recommended Operating Conditions
)
Symbol
Characteristic
Nominal Bus
Voltage
(1)
Min
Max
Unit
V
IH
(2)
Input high voltage (all inputs including SYSCLK)
1.5
GV
DD
× 0.65
GV
DD
+ 0.3
V
V
IH
1.8
OV
DD
/GV
DD
× 0.65
OV
DD
/GV
DD
+ 0.3
V
V
IH
2.5
1.7
OV
DD
/GV
DD
+ 0.3
V
V
IL
(2)(6)
Input low voltage (all inputs including SYSCLK)
1.5
-0.3
GV
DD
× 0.35
V
V
IL
1.8
-0.3
OV
DD
/GV
DD
× 0.35
V
V
IL
2.5
-0.3
0.7
V
I
IN
(2)(3)
Input leakage current, V
IN
= GV
DD
/OV
DD
–
–
30
μA
I
TSI
(2)(3)(4)
High-impedance (off-state)
Leakage current, V
IN
= GV
DD
/OV
DD
–
–
30
μA
V
OH
(6)
Output high voltage, I
OH
= -5 mA
1.5
OV
DD
/GV
DD
–
0.45
–
V
V
OH
1.8
OV
DD
/GV
DD
–
0.45
–
V
V
OH
2.5
1.8
–
V
V
OL
(6)
Output low voltage, I
OL
= 5 mA
1.5
–
0.45
V
V
OL
1.8
–
0.45
V
V
OL
2.5
–
0.6
V
C
IN
Capacitance,
V
IN
= 0V, f = 1 MHz
L3 interface
(5)
–
–
9.5
pF
All other inputs
(5)
–
8.0
pF
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