saf-xc878m-16ffi5v Infineon Technologies Corporation, saf-xc878m-16ffi5v Datasheet - Page 79

• Manufacturer Part Number: saf-xc878m-16ffi5v
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.6
The XC87x microcontroller requires two different levels of power supply:
•
•
Figure 19
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
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 19
EVR Features
•
•
•
•
•
1) SAK product variant does not support power-down mode.
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
DDP
DDC
prewarning detection
brownout detection
shows the XC87x power supply system. A power supply of 3.3 V or 5.0 V
Power Supply System with Embedded Voltage Regulator
XC87x Power Supply System
GPIO Ports
Memory
CPU &
(P0-P5)
V
DDP
V
DDC
): 3.3 V/5.0 V
): 2.5 V ± 7.5%
On-chip
OSC
EVR
V
DDC
(2.5V)
Peripheral
72
logic
V
V
DDP
SSP
(3.3V/5.0V)
XTAL1&
FLASH
XTAL2
ADC
PLL
Functional Description
1)
XC87xCLM
V1.5, 2011-03
1)
, the main