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參數資料
| 型號： | PCF51AC256BCLKE |
| 廠商： | Freescale Semiconductor |
| 文件頁數： | 10/42頁 |
| 文件大?。?/td> | 0K |
| 描述： | MCU 8BIT 256K FLASH 80-LQFP |
| 標準包裝： | 90 |
| 系列： | MCF51AC |
| 核心處理器： | Coldfire V1 |
| 芯體尺寸： | 32-位 |
| 速度： | 50MHz |
| 連通性： | I²C，SCI，SPI |
| 外圍設備： | LVD，PWM，WDT |
| 輸入/輸出數： | 69 |
| 程序存儲器容量： | 256KB（256K x 8） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 32K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 數據轉換器： | A/D 24x12b |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 80-LQFP |
| 包裝： | 托盤 |
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MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.7
Electrical Characteristics
Freescale Semiconductor
18
2.3
Thermal Characteristics
This section provides information about operating temperature range, power dissipation, and package
thermal resistance. Power dissipation on I/O pins is usually small compared to the power dissipation in
on-chip logic and it is user-determined rather than being controlled by the MCU design. In order to take
PI/O into account in power calculations, determine the difference between actual pin voltage and VSS or
VDD and multiply by the pin current for each I/O pin. Except in cases of unusually high pin current (heavy
loads), the difference between pin voltage and VSS or VDD will be very small.
Table 6. Absolute Maximum Ratings
Rating
Symbol
Value
Unit
Supply voltage
VDD
–0.3 to 5.8
V
Input voltage
VIn
–0.3 to VDD + 0.3
V
Instantaneous maximum current
Single pin limit (applies to all port pins)1, 2, 3
1 Input must be current limited to the value specified. To determine the value of the required
current-limiting resistor, calculate resistance values for positive (VDD) and negative (VSS) clamp
voltages, then use the larger of the two resistance values.
2 All functional non-supply pins are internally clamped to V
SS and VDD.
3 Power supply must maintain regulation within operating V
DD range during instantaneous and
operating maximum current conditions. If positive injection current (VIn > VDD) is greater than
IDD, the injection current may flow out of VDD and could result in external power supply going
out of regulation. Ensure external VDD load will shunt current greater than maximum injection
current. This will be the greatest risk when the MCU is not consuming power. Examples are: if
no system clock is present, or if the clock rate is very low which would reduce overall power
consumption.
ID
25
mA
Maximum current into VDD
IDD
120
mA
Storage temperature
Tstg
–55 to 150
C
Table 7. Thermal Characteristics
Rating
Symbol
Value
Unit
Operating temperature range (packaged)
TA
–40 to 105
C
Maximum junction temperature
TJ
150
C
Thermal resistance 1,2,3,4
80-pin LQFP
1s
2s2p
64-pin LQFP
1s
2s2p
64-pin QFP
1s
2s2p
44-pin LQFP
1s
2s2p
JA
51
38
59
41
50
36
67
45
C/W
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCF51AC256BCPUE | 功能描述:32位微控制器 - MCU 32 Bit 256K FLASH 32K RAM NO CAN RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數據總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數據 RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風格:SMD/SMT |
| PCF51AG128VLF | 制造商:Freescale Semiconductor 功能描述:PCF51AG128VLF - Bulk |
| PCF51AG128VLH | 制造商:Freescale Semiconductor 功能描述:PCF51AG128VLH - Bulk |
| PCF51AG128VLK | 制造商:Freescale Semiconductor 功能描述:PCF51AG128VLK - Bulk |
| PCF51AG128VQH | 制造商:Freescale Semiconductor 功能描述:PCF51AG128VQH - Bulk |
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