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SEC1210 Datasheet(PDF) 20 Page - Microchip Technology

Part # SEC1210
Description  Smart Card Bridge to USB and UART Interfaces
PDF  218 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

SEC1210 Datasheet(HTML) 20 Page - Microchip Technology

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SEC1110/SEC1210
DS00001561C-page 20
 2013 - 2016 Microchip Technology Inc.
.
7.1
Sleep/Power Management
The R8051XC2 has a power management control unit that generates clock enable signals for the main CPU and for
peripherals; serves Power Down Modes IDLE and STOP; and generates an internal synchronous reset signal (upon
external reset, watchdog timer overflow, or software reset condition). The IDLE Mode leaves the clock of the internal
peripherals running. Any interrupt will wake the CPU.
The STOP Mode turns off all internal clocks. The CPU will exit this state when an external interrupt (0 or 1)or reset
occurs and internally generated interrupts are disabled since they require clock activity.
The Wake-up From Power-Down Mode control unit services two external interrupts during power-down modes. They
can combinationally force the clock enable outputs back to active state so the clock generation can be resumed.
FIGURE 7-1:
R8051XC2 Block Diagram
R8051XC2
CPU
256 Bytes IRAM
SFR
Registers
OCDS
EASE on-chip
Debugging block and
JTAG Interface
Timer 0
Timer 1
Watchdog
Timer
External
Interrupts
Power Management,
Reset & Wake-Up
Control Units
SFR Mux
CLK_PWR
SmartCard1,
2*
ISR
8051-compatible
External
Memory
ref_clk
SPI1
UART
JTAG
SC1, SC2
SMSC Trace FIFO,
SPI XIP
SPI2
XDATA
SRAM
Oscillators
Clkper Peripherals
GPIO
GPIO
USB
ROM
Timer 2
SPI
Master
16550
UART
UDC
OTP
ROM
* SEC1210 only



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