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SAM7S161 Schematic ( PDF Datasheet ) - ATMEL Corporation

Teilenummer SAM7S161
Beschreibung ARM-based Flash MCU
Hersteller ATMEL Corporation
Logo ATMEL Corporation Logo 




Gesamt 30 Seiten
SAM7S161 Datasheet, Funktion
AT91SAM
ARM-based Flash MCU
SAM7S512 SAM7S256 SAM7S128 SAM7S64
SAM7S321 SAM7S32 SAM7S161 SAM7S16
Features
Incorporates the ARM7TDMI® ARM® Thumb® Processor
– High-performance 32-bit RISC Architecture
– High-density 16-bit Instruction Set
– Leader in MIPS/Watt
– EmbeddedICEIn-circuit Emulation, Debug Communication Channel Support
Internal High-speed Flash
– 512 Kbytes (SAM7S512) Organized in Two Contiguous Banks of 1024 Pages of 256
Bytes (Dual Plane)
– 256 Kbytes (SAM7S256) Organized in 1024 Pages of 256 Bytes (Single Plane)
– 128 Kbytes (SAM7S128) Organized in 512 Pages of 256 Bytes (Single Plane)
– 64 Kbytes (SAM7S64) Organized in 512 Pages of 128 Bytes (Single Plane)
– 32 Kbytes (SAM7S321/32) Organized in 256 Pages of 128 Bytes (Single Plane)
– 16 Kbytes (SAM7S161/16) Organized in 256 Pages of 64 Bytes (Single Plane)
– Single Cycle Access at Up to 30 MHz in Worst Case Conditions
– Prefetch Buffer Optimizing Thumb Instruction Execution at Maximum Speed
– Page Programming Time: 6 ms, Including Page Auto-erase, Full Erase Time: 15 ms
– 10,000 Write Cycles, 10-year Data Retention Capability, Sector Lock Capabilities, Flash
Security Bit
– Fast Flash Programming Interface for High Volume Production
Internal High-speed SRAM, Single-cycle Access at Maximum Speed
– 64 Kbytes (SAM7S512/256)
– 32 Kbytes (SAM7S128)
– 16 Kbytes (SAM7S64)
– 8 Kbytes (SAM7S321/32)
– 4 Kbytes (SAM7S161/16)
Memory Controller (MC)
– Embedded Flash Controller, Abort Status and Misalignment Detection
Reset Controller (RSTC)
– Based on Power-on Reset and Low-power Factory-calibrated Brown-out Detector
– Provides External Reset Signal Shaping and Reset Source Status
Clock Generator (CKGR)
– Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and one PLL
Power Management Controller (PMC)
– Software Power Optimization Capabilities, Including Slow Clock Mode (Down to 500
Hz) and Idle Mode
– Three Programmable External Clock Signals
Advanced Interrupt Controller (AIC)
– Individually Maskable, Eight-level Priority, Vectored Interrupt Sources
– Two (SAM7S512/256/128/64/321/161) or One (SAM7S32/16) External Interrupt Source(s)
and One Fast Interrupt Source, Spurious Interrupt Protected
6175M–ATARM–26-Oct-12






SAM7S161 Datasheet, Funktion
3. Signal Description
Table 3-1. Signal Description List
Signal Name
Function
Type
Active
Level
Power
VDDIN
Voltage and ADC Regulator Power Supply
Input
Power
VDDOUT
Voltage Regulator Output
Power
VDDFLASH
Flash Power Supply
Power
VDDIO
I/O Lines Power Supply
Power
VDDCORE
Core Power Supply
Power
VDDPLL
PLL
Power
GND
Ground
Ground
Clocks, Oscillators and PLLs
XIN Main Oscillator Input
Input
XOUT
Main Oscillator Output
Output
PLLRC
PLL Filter
Input
PCK0 - PCK2
Programmable Clock Output
Output
ICE and JTAG
TCK
Test Clock
Input
TDI Test Data In
Input
TDO
Test Data Out
Output
TMS
Test Mode Select
Input
JTAGSEL
JTAG Selection
Input
Flash Memory
ERASE
Flash and NVM Configuration Bits Erase
Command
Input
High
Reset/Test
NRST
Microcontroller Reset
I/O Low
TST Test Mode Select
Input
High
Debug Unit
DRXD
Debug Receive Data
Input
DTXD
Debug Transmit Data
Output
AIC
IRQ0 - IRQ1
External Interrupt Inputs
Input
FIQ Fast Interrupt Input
Input
PIO
PA0 - PA31
Parallel IO Controller A
I/O
Comments
3.0 to 3.6V
1.85V nominal
3.0V to 3.6V
3.0V to 3.6V or 1.65V to 1.95V
1.65V to 1.95V
1.65V to 1.95V
No pull-up resistor
No pull-up resistor
No pull-up resistor
Pull-down resistor(1)
Pull-down resistor(1)
Open-drain with pull-Up resistor
Pull-down resistor(1)
IRQ1 not present on SAM7S32/16
Pulled-up input at reset
PA0 - PA20 only on SAM7S32/16
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
6

6 Page









SAM7S161 pdf, datenblatt
5. Power Considerations
5.1 Power Supplies
The SAM7S Series has six types of power supply pins and integrates a voltage regulator, allowing the device to be
supplied with only one voltage. The six power supply pin types are:
z VDDIN pin. It powers the voltage regulator and the ADC; voltage ranges from 3.0V to 3.6V, 3.3V nominal.
z VDDOUT pin. It is the output of the 1.8V voltage regulator.
z VDDIO pin. It powers the I/O lines and the USB transceivers; dual voltage range is supported. Ranges from 3.0V
to 3.6V, 3.3V nominal or from 1.65V to 1.95V, 1.8V nominal. Note that supplying less than 3.0V to VDDIO prevents
any use of the USB transceivers.
z VDDFLASH pin. It powers a part of the Flash and is required for the Flash to operate correctly; voltage ranges
from 3.0V to 3.6V, 3.3V nominal.
z VDDCORE pins. They power the logic of the device; voltage ranges from 1.65V to 1.95V, 1.8V typical. It can be
connected to the VDDOUT pin with decoupling capacitor. VDDCORE is required for the device, including its
embedded Flash, to operate correctly.
During startup, core supply voltage (VDDCORE) slope must be superior or equal to 6V/ms.
z VDDPLL pin. It powers the oscillator and the PLL. It can be connected directly to the VDDOUT pin.
No separate ground pins are provided for the different power supplies. Only GND pins are provided and should be
connected as shortly as possible to the system ground plane.
In order to decrease current consumption, if the voltage regulator and the ADC are not used, VDDIN, ADVREF, AD4,
AD5, AD6 and AD7 should be connected to GND. In this case VDDOUT should be left unconnected.
5.2 Power Consumption
The SAM7S Series has a static current of less than 60 µA on VDDCORE at 25°C, including the RC oscillator, the voltage
regulator and the power-on reset. When the brown-out detector is activated, 20 µA static current is added.
The dynamic power consumption on VDDCORE is less than 50 mA at full speed when running out of the Flash. Under
the same conditions, the power consumption on VDDFLASH does not exceed 10 mA.
5.3 Voltage Regulator
The SAM7S Series embeds a voltage regulator that is managed by the System Controller.
In Normal Mode, the voltage regulator consumes less than 100 µA static current and draws 100 mA of output current.
The voltage regulator also has a Low-power Mode. In this mode, it consumes less than 25 µA static current and draws 1
mA of output current.
Adequate output supply decoupling is mandatory for VDDOUT to reduce ripple and avoid oscillations. The best way to
achieve this is to use two capacitors in parallel: one external 470 pF (or 1 nF) NPO capacitor must be connected between
VDDOUT and GND as close to the chip as possible. One external 2.2 µF (or 3.3 µF) X7R capacitor must be connected
between VDDOUT and GND.
Adequate input supply decoupling is mandatory for VDDIN in order to improve startup stability and reduce source voltage
drop. The input decoupling capacitor should be placed close to the chip. For example, two capacitors can be used in
parallel: 100 nF NPO and 4.7 µF X7R.
5.4 Typical Powering Schematics
The SAM7S Series supports a 3.3V single supply mode. The internal regulator is connected to the 3.3V source and its
output feeds VDDCORE and the VDDPLL. Figure 5-1 shows the power schematics to be used for USB bus-powered
systems.
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
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