AC inputs during testing are drive" />
參數(shù)資料
型號: T89C51AC2-SLSIM
廠商: Atmel
文件頁數(shù): 15/121頁
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 32K 44PLCC
標(biāo)準(zhǔn)包裝: 27
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
連通性: UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 34
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
111
A/T89C51AC2
4127H–8051–02/08
External Clock Drive
Waveforms
AC Testing Input/Output
Waveforms
AC inputs during testing are driven at VCC - 0.5 for a logic “1” and 0.45V for a logic “0”.
Timing measurement are made at VIH min for a logic “1” and VIL max for a logic “0”.
Float Waveforms
For timing purposes as port pin is no longer floating when a 100 mV change from load
voltage occurs and begins to float when a 100 mV change from the loaded VOH/VOL level
occurs. IOL/IOH ≥ ± 20 mA.
V
CC-0.5V
0.45V
0.7V
CC
0.2V
CC-0.1
T
CHCL
TCLCX
TCLCL
T
CLCH
TCHCX
INPUT/OUTPUT
0.2 V
CC + 0.9
0.2 VCC - 0.1
V
CC -0.5V
0.45V
FLOAT
V
OH - 0.1 V
V
OL + 0.1 V
VLOAD
VLOAD + 0.1 V
V
LOAD - 0.1 V
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