SX8801R View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SX8801R' PDF : 135 Pages View PDF
XE8801A – SX8801R
acquisition chain
voltage multiplier
CPU
parallel and serial ports
RC and crystal oscillator
VLD
Counters and PWM
0
2.15 2.4
3.3 VBAT (V)
Figure 2-4. Operation range of the different circuit blocks
2.4 Current consumption
The tables below give the current consumption for the circuit in different configurations. The figures are indicative
only and may change as a function of the actual software implemented in the circuit.
Table 2-5 gives the current consumption for the flash version of the circuit. The peripherals are disabled. The
parallel ports A and B are configured in input with pull up, the parallel port C is configured as an output. Their pins
are not connected externally. The pin RESET is connected to VSS and the pin VPP/TEST is connected to VBAT.
he inputs of the acquisition chain are connected to VSS.
Table 2-5. Typical current consumption of the XE8801AM version
Operation mode CPU
RC
Xtal Consumption
High speed CPU
Low power CPU
Low power time
keeping
Fast wake-up
time keeping
Immediate wake-
up time keeping
VLD static current
16 bit resolution
data acquisition
12 bit , gain 100,
data acquisition
1 MIPS
32 kIPS
HALT
HALT
HALT
HALT
HALT
1 MHz
Off
Off
Ready
100 kHz
2 MHz
2 MHz
Off
32 kHz
32 kHz
32kHz
Off
Off
Off
310 µA
10 µA
1.0 µA
1.7 µA
1.4 µA
15 µA
190 µA
460 µA
comments
2.4V<>5.5V, 27°C
2.4V <>5.5V, 27°C
2.4V <>5.5V, 27°C
2.4V <>5.5V, 27°C
2.4V <>5.5V, 27°C
2.4V <>5.5V, 27°C
3.0V, 27°C
3.0V, 27°C
Note
1
2
1. PGA disabled, ADC enabled, 16 bit resolution
2. PGA 1 disabled, PGA 2 and 3 enabled, ADC enabled, 12 bit resolution
For more information concerning the current consumption of the ZoomingADCTM, see the power consumption
section in the acquisition chain chapter of this document, which shows the current consumption of this block as a
function of temperature and voltage and for different configurations of the PGA and ADC.
The power consumption of the ROM version of the circuit is identical if it is configured as shown in Figure 2-2. In
the high speed configuration, the current consumption will increase proportional with VBAT.
© Semtech 2005
www.semtech.com
2-5
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