參數資料
型號: MT80C51C-12D
廠商: TEMIC SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP44
文件頁數: 26/170頁
文件大?。?/td> 4133K
代理商: MT80C51C-12D
121
ATtiny4/5/9/10 [DATASHEET]
8127F–AVR–02/2013
17. Typical Characteristics
The data contained in this section is largely based on simulations and characterization of similar devices in the
same process and design methods. Thus, the data should be treated as indications of how the part will behave.
The following charts show typical behavior. These figures are not tested during manufacturing. During characteri-
sation devices are operated at frequencies higher than test limits but they are not guaranteed to function properly
at frequencies higher than the ordering code indicates.
All current consumption measurements are performed with all I/O pins configured as inputs and with internal pull-
ups enabled. Current consumption is a function of several factors such as operating voltage, operating frequency,
loading of I/O pins, switching rate of I/O pins, code executed and ambient temperature. The dominating factors are
operating voltage and frequency.
A sine wave generator with rail-to-rail output is used as clock source but current consumption in Power-Down
mode is independent of clock selection. The difference between current consumption in Power-Down mode with
Watchdog Timer enabled and Power-Down mode with Watchdog Timer disabled represents the differential current
drawn by the Watchdog Timer.
The current drawn from pins with a capacitive load may be estimated (for one pin) as follows:
where V
CC = operating voltage, C
L = load capacitance and fSW = average switching frequency of I/O pin.
17.1
Supply Current of I/O Modules
Tables and formulas below can be used to calculate additional current consumption for the different I/O modules in
Active and Idle mode. Enabling and disabling of I/O modules is controlled by the Power Reduction Register. See
Note:
1. The ADC is available in ATtiny5/10, only
Table 17-2 below can be used for calculating typical current consumption for other supply voltages and frequencies
than those mentioned in the Table 17-1 above.
Note:
1. The ADC is available in ATtiny5/10, only
I
CP
V
CC
C
L
f
SW
Table 17-1.
Additional Current Consumption for the different I/O modules (absolute values)
PRR bit
Typical numbers
VCC = 2V, f = 1MHz
VCC = 3V, f = 4MHz
VCC = 5V, f = 8MHz
PRTIM0
6.6 uA
40.0 uA
153.0 uA
PRADC (1)
29.6 uA
88.3 uA
333.3 uA
Table 17-2.
Additional Current Consumption (percentage) in Active and Idle mode
PRR bit
Current consumption additional to
active mode with external clock
Current consumption additional to
idle mode with external clock
PRTIM0
2.3 %
10.4 %
PRADC (1)
6.7 %
28.8 %
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