1. Under steady-state (non-transient) conditions, IOL
參數(shù)資料
型號: TSC87251G2D-L16CER
廠商: Atmel
文件頁數(shù): 61/77頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 32K OTP 16MHZ 44VQFP
標(biāo)準(zhǔn)包裝: 1,500
系列: 8x251
核心處理器: C251
芯體尺寸: 8/16-位
速度: 16MHz
連通性: EBI/EMI,I²C,Microwire,SPI,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器容量: 32KB(32K x 8)
程序存儲(chǔ)器類型: OTP
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: 0°C ~ 70°C
封裝/外殼: 44-LQFP
包裝: 帶卷 (TR)
其它名稱: TSC87251G2DL16CER
64
AT/TSC8x251G2D
4135F–8051–11/06
Notes:
1. Under steady-state (non-transient) conditions, IOL must be externally limited as follows:
Maximum IOL per port pin: 10 mA
Maximum IOL per 8-bit port:Port 0 26 mA
Ports 1-3 15 mA
Maximum Total IOL for all: Output Pins 71 mA
If IOL exceeds the test conditions, VOL may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test
conditions.
2. Capacitive loading on Ports 0 and 2 may cause spurious noise pulses above 0.4 V on the low-level outputs of ALE and Ports
1, 2, and 3. The noise is due to external bus capacitance discharging into the Port 0 and Port 2 pins when these pins change
from high to low. In applications where capacitive loading exceeds 100 pF, the noise pulses on these signals may exceed
0.8 V. It may be desirable to qualify ALE or other signals with a Schmitt Trigger or CMOS-level input logic.
3. Capacitive loading on Ports 0 and 2 causes the VOH on ALE and PSEN# to drop below the specification when the address
lines are stabilizing.
4. Typical values are obtained using VDD = 5 V and TA = 25°C. They are not tested and there is not guarantee on these values.
5. The input threshold voltage of SCL and SDA meets the TWI specification, so an input voltage below 0.3VDD will be recog-
nized as a logic 0 while an input voltage above 0.7VDD will be recognized as a logic 1.
Figure 28.
IDD/IDL Versus Frequency; VDD = 4.5 to 5.5 V
Note:
1. The clock prescaler is not used: FOSC = FXTAL.
max Active mode (mA)
typ Active mode (mA)
max Idle mode (mA)
typ Idle mode (mA)
40
30
20
10
0
IDD/I
D
L(mA
)
Frequency at XTAL(1) (MHz)
2
4
6
8
10
12
14
16
18
20
22
24
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