AT91SAM7S512-MU-999 Atmel, AT91SAM7S512-MU-999 Datasheet - Page 137
AT91SAM7S512-MU-999
Manufacturer Part Number
AT91SAM7S512-MU-999
Description
IC MCU ARM7 512KB FLASH 64-VQFN
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7S512-MU-999
Core Processor
ARM7
Core Size
16/32-Bit
Speed
55MHz
Connectivity
I²C, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
For Use With
AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Table 20-20. Signal Description List (Continued)
20.3.2
6175K–ATARM–30-Aug-10
Signal Name
TST
PGMEN0
PGMEN1
PGMEN2
TCK
TDI
TDO
TMS
Entering Serial Programming Mode
Function
Test Mode Select
Test Mode Select
Test Mode Select
Test Mode Select
JTAG TCK
JTAG Test Data In
JTAG Test Data Out
JTAG Test Mode Select
The following algorithm puts the device in Serial Programming Mode:
Note:
Table 20-21. Reset TAP Controller and Go to Select-DR-Scan
• Apply GND, VDDIO, VDDCORE, VDDFLASH and VDDPLL.
• Apply XIN clock within T
• Wait for T
• Reset the TAP controller clocking 5 TCK pulses with TMS set.
• Shift 0x2 into the IR register (IR is 4 bits long, LSB first) without going through the Run-Test-
• Shift 0x2 into the DR register (DR is 4 bits long, LSB first) without going through the Run-
• Shift 0xC into the IR register (IR is 4 bits long, LSB first) without going through the Run-Test-
Idle state.
Test-Idle state.
Idle state.
After reset, the device is clocked by the internal RC oscillator. Before clearing RDY signal, if an
external clock (> 32 kHz) is connected to XIN, then the device will switch on the external clock.
Else, XIN input is not considered. An higher frequency on XIN speeds up the programmer
handshake.
TDI
POR_RESET
Xt
X
X
X
X
X
X
.
POR_RESET
JTAG
Test
TMS
1
1
1
1
1
0
1
AT91SAM7S Series Preliminary
+ 32(T
Output
Type
Input
Input
Input
Input
Input
Input
Input
TAP Controller State
Test-Logic Reset
Run-Test/Idle
Select-DR-Scan
SCLK
) if an external clock is available.
Active
Level
High
High
High
Low
-
-
-
-
Comments
Must be connected to VDDIO.
Must be connected to VDDIO
Must be connected to VDDIO
Must be connected to GND
Pulled-up input at reset
Pulled-up input at reset
Pulled-up input at reset
137
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