參數(shù)資料
型號: MC705C9ACPE
廠商: Freescale Semiconductor
文件頁數(shù): 113/118頁
文件大?。?/td> 0K
描述: IC MCU 2.1MHZ 16K OTP 40-DIP
標準包裝: 9
系列: HC05
核心處理器: HC05
芯體尺寸: 8-位
速度: 2.1MHz
連通性: SCI,SPI
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 24
程序存儲器容量: 16KB(16K x 8)
程序存儲器類型: OTP
RAM 容量: 352 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
Electrical Specifications
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
94
Freescale Semiconductor
12.4 Power Considerations
The average chip-junction temperature, T
J, in °C, can be obtained from:
TJ = TA + (PD × θJA)
(1)
where:
T
A = Ambient temperature, °C
θ
JA = Package thermal resistance, junction to ambient, °C/W
P
D = PINT + PI
/O
P
INT = IDD × VDD watts (chip internal power)
P
I
/O = Power dissipation on input and output pins (user determined)
For most applications P
I
/O PINT and can be neglected.
The following is an approximate relationship between P
D and TJ (neglecting PJ):
P
D = K ÷ (TJ + 273 °C)
(2)
Solving equations (1) and (2) for K gives:
K = P
D × (TA + 273 °C) + θJA × (PD)
2
(3)
where K is a constant pertaining to the particular part. K can be determined from equation (3) by
measuring P
D (at equilibrium) for a known TA. Using this value of K, the values of PD and TJ can be
obtained by solving equations (1) and (2) iteratively for any value of T
A.
Figure 12-1. Test Load
VDD
C
R2
R1
TEST
POINT
(SEE TABLE)
SEE TABLE
V
DD = 4.5 V
Pins
R1
R2
C
PA7–PA0
PB7–PB0
PC7–PC0
PD5–PD0, PD7
3.26
2.38
50 pF
V
DD = 3.0 V
Pins
R1
R2
C
PA7–PA0
PB7–PB0
PC7–PC0
PD5–PD0, PD7
10.91
6.32
50 pF
相關(guān)PDF資料
PDF描述
2-6457567-2 ADPTR,DUP,LC,SR BLU,CER,LOGO
V24A28T400BF3 CONVERTER MOD DC/DC 28V 400W
V24A28T400BF2 CONVERTER MOD DC/DC 28V 400W
V24A24T400BG3 CONVERTER MOD DC/DC 24V 400W
V24A24T400BG2 CONVERTER MOD DC/DC 24V 400W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC705E6CDWE 制造商:Freescale Semiconductor 功能描述:
MC705J1A 制造商:Freescale Semiconductor 功能描述:
MC705J1ACDWE 功能描述:8位微控制器 -MCU HCO5 CORE+1.2K RAM + EPR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC705J1ACDWE 制造商:Freescale Semiconductor 功能描述:8-Bit Microcontroller IC
MC705JJ7CDWE 功能描述:8位微控制器 -MCU 705JJ7 224 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT