参数资料
型号: MCF51JE128CLK
厂商: Freescale Semiconductor
文件页数: 28/47页
文件大小: 0K
描述: IC MCU 128K COLDF 80-LQFP
标准包装: 480
系列: MCF51JE
核心处理器: Coldfire V1
芯体尺寸: 32-位
速度: 50MHz
连通性: CAN,EBI/EMI,I²C,SCI,SPI,USB OTG
外围设备: LVD,PWM,WDT
输入/输出数: 47
程序存储器容量: 128KB(128K x 8)
程序存储器类型: 闪存
RAM 容量: 32K x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 3.6 V
数据转换器: A/D 12x12b,D/A 1x12b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 80-LQFP
包装: 托盘
MCF51JE256 Datasheet, Rev. 4
Preliminary Electrical Characteristics
Freescale Semiconductor
34
3.12
AC Characteristics
This section describes ac timing characteristics for each peripheral system.
3.12.1
Control Timing
Table 20. Control Timing
#
Parameter
Symbol
Minimum
Typica
l1
1
Typical values are based on characterization data at VDD = 5.0 V, 25 C unless otherwise stated.
Maximum
Unit
C
1
Bus frequency (tcyc = 1/fBus)
VDD 1.8 V
fBus
dc
10
MHz
D
VDD > 2.1 V
fBus
dc
20
MHz
D
VDD > 2.4 V
fBus
dc
25.165
MHz
D
2
Internal low-power oscillator period
tLPO
700
1000
1300
s
P
3
External reset pulse width2
2
This is the shortest pulse that is guaranteed to be recognized as a reset pin request. Shorter pulses are not guaranteed to override reset
requests from internal sources.
(tcyc =
1/fSelf_reset)
textrst
100
ns
D
4
Reset low drive
trstdrv
66 x tcyc
——
ns
D
5
Active background debug mode
latch setup time
tMSSU
500
ns
D
6
Active background debug mode
latch hold time
tMSH
100
ns
D
7
IRQ pulse width
Asynchronous path2
Synchronous path3
3
This is the minimum pulse width that is guaranteed to pass through the pin synchronization circuitry. Shorter pulses may or may not be
recognized. In stop mode, the synchronizer is bypassed so shorter pulses can be recognized in that case.
tILIH, tIHIL
100
1.5 x tcyc
——
ns
D
8
KBIPx pulse width
Asynchronous path2
Synchronous path3
tILIH, tIHIL
100
1.5 x tcyc
——
ns
D
9
Port rise and fall time (load = 50 pF)4, Low Drive
4
Timing is shown with respect to 20% VDD and 80% VDD levels. Temperature range –40 C to 105 C.
Slew rate
control disabled
(PTxSE = 0)
tRise, tFall
—11
ns
D
Slew rate
control enabled
(PTxSE = 1)
tRise, tFall
—35
ns
D
Slew rate
control disabled
(PTxSE = 0)
tRise, tFall
—40
ns
D
Slew rate
control enabled
(PTxSE = 1)
tRise, tFall
—75
ns
D
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