saa-xc886clm Infineon Technologies Corporation, saa-xc886clm Datasheet - Page 72

• Manufacturer Part Number: saa-xc886clm
• Description: 8-bit Single Chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.6
The SAA-XC886 microcontroller requires two different levels of power supply:
•
•
Figure 20
be provided from the external power supply pin. The 2.5 V power supply for the logic is
generated by the EVR. The EVR helps to reduce the power consumption of the whole
chip and the complexity of the application board design.
The EVR consists of a main voltage regulator and a low power voltage regulator. In
active mode, both voltage regulators are enabled. In power-down mode, the main
voltage regulator is switched off, while the low power voltage regulator continues to
function and provide power supply to the system with low power consumption.
Figure 20
EVR Features
•
•
•
•
•
Data Sheet
5.0 V for the Embedded Voltage Regulator (EVR) and Ports
2.5 V for the core, memory, on-chip oscillator, and peripherals
Input voltage (
Output voltage (
Low power voltage regulator provided in power-down mode
V
V
DDC
DDC
and
brownout detection
shows the SAA-XC886 power supply system. A power supply of 5.0 V must
Power Supply System with Embedded Voltage Regulator
V
SAA-XC886 Power Supply System
DDP
V
prewarning detection
DDP
Memory
V
CPU &
(P0-P5)
GPIO
DDC
Ports
): 5.0 V
): 2.5 V ± 7.5%
On-chip
OSC
EVR
V
D D C
Peripheral
(2.5V)
65
logic
V
V
D D P
SSP
(5.0V)
XTAL1&
FLASH
XTAL2
ADC
PLL
Functional Description
SAA-XC886CLM
V1.0, 2009-09