saf-xc888cm-8ffi5v Infineon Technologies Corporation, saf-xc888cm-8ffi5v Datasheet - Page 75

• Manufacturer Part Number: saf-xc888cm-8ffi5v
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.6
The XC886/888 microcontroller requires two different levels of power supply:
•
•
Figure 21
must 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 21
EVR Features
•
•
•
•
•
Data Sheet
3.3 V or 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 XC886/888 power supply system. A power supply of 3.3 V or 5.0 V
Power Supply System with Embedded Voltage Regulator
V
XC886/888 Power Supply System
DDP
V
prewarning detection
GPIO Ports
DDP
V
Memory
CPU &
(P0-P5)
DDC
): 3.3 V/5.0 V
): 2.5 V ± 7.5%
On-chip
OSC
EVR
V
DDC
(2.5V)
Peripheral
68
logic
V
V
DDP
SSP
(3.3V/5.0V)
XTAL1&
FLASH
XTAL2
ADC
PLL
Functional Description
XC886/888CLM
V1.1, 2009-01