參數(shù)資料
型號: DSP56800ERM
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: 16-bit Digital Signal Controllers
中文描述: 16位數(shù)字信號控制器
文件頁數(shù): 97/124頁
文件大小: 1880K
代理商: DSP56800ERM
DC Electrical Characteristics
56F8013 Technical Data, Rev. 2
Freescale Semiconductor
Preliminary
97
10.2.1
The 56F8013 has two on-chip regulators. One supplies the PLL and relaxation oscillator. It has no external
pins and therefore has no external characteristics which must be guaranteed (other than proper operation
of the device). The second regulator supplies approximately 2.5V to the 56F8013’s core logic. This
regulator requires an external 4.4
μ
F, or greater, capacitor for proper operation. Ceramic and tantalum
capacitors tend to provide better performance tolerances. The output voltage can be measured directly on
the V
CAP
pin. The specifications for this regulator are shown in
Table 10-8
.
Voltage Regulator Specifications
Table 10-7 Power-On Reset Low-Voltage Parameters
Characteristic
Symbol
Min
Typ
Max
Unit
Low-Voltage Interrupt for 3.3V supply
1
1. When V
DD
drops below V
EI3.3
maximum value, an interrupt is generated.
2. When V
DD
drops below V
EI32.5
maximum value, an interrupt is generated.
3. Power-On Reset occurs whenever the internally regulated 2.5V digital supply drops below 1.8V. While
power is ramping up, this signal remains active for as long as the internal 2.5V is below 2.15V or the 3.3V
1/O voltage is below 2.7V, no matter how long the ramp-up rate is. The internally regulated voltage is
typically 100mV less than V
DD
during ramp-up until 2.5V is reached, at which time it self-regulates.
V
EI3.3
2.65
2.7
V
Low-Voltage Interrupt for 2.5V supply
2
V
E12.5
2.05
2.15
V
Low-Voltage Interrupt Recovery Hysteresis
V
EIH
50
mV
Power-On Reset
3
POR
1.8
1.9
V
Table 10-8. Regulator Parameters
Characteristic
Symbol
Min
Typical
Max
Unit
Input Voltage
V
IN
3.0
3.6
V
Output Voltage
V
OUT
2.25
2.5
2.75
V
Short Circuit Current
I
SS
450
650
mA
Short Circuit Tolerance
(output shorted to ground)
T
RSC
30
Minutes
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