AT91SAM7S32-AU-999 Atmel, AT91SAM7S32-AU-999 Datasheet - Page 138
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
AT91SAM7S32-AU-999
Manufacturer Part Number
AT91SAM7S32-AU-999
Description
IC MCU ARM7 32KB FLASH 48LQFP
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7S32-AU-999
Core Processor
ARM7
Core Size
16/32-Bit
Speed
55MHz
Connectivity
I²C, SPI, SSC, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
21
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
8K 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
48-LQFP
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 138 of 779
- Download datasheet (11Mb)
20.3.3
20.3.4
138
AT91SAM7S Series Preliminary
Read/Write Handshake
Device Operations
The read/write handshake is done by carrying out read/write operations on two registers of the
device that are accessible through the JTAG:
Access to these registers is done through the TAP 38-bit DR register comprising a 32-bit data
field, a 5-bit address field and a read/write bit. The data to be written is scanned into the 32-bit
data field with the address of the register to the 5-bit address field and 1 to the read/write bit. A
register is read by scanning its address into the address field and 0 into the read/write bit, going
through the UPDATE-DR TAP state, then scanning out the data.
Refer to the ARM7TDMI reference manuel for more information on Comm channel operations.
Figure 20-8. TAP 8-bit DR Register
A read or write takes place when the TAP controller enters UPDATE-DR state. Refer to the IEEE
1149.1 for more details on JTAG operations.
The write handshake is done by polling the Debug Comms Control Register until the R bit is
cleared. Once cleared, data can be written to the Debug Comms Data Register.
The read handshake is done by polling the Debug Comms Control Register until the W bit is set.
Once set, data can be read in the Debug Comms Data Register.
Several commands on the Flash memory are available. These commands are summarized in
Table 20-3 on page
is reading and writing the Debug Comms Registers.
TDI
• Debug Comms Control Register: DCCR
• Debug Comms Data Register: DCDR
• The address of the Debug Comms Control Register is 0x04.
• The address of the Debug Comms Data Register is 0x05.
The Debug Comms Control Register is read-only and allows synchronized handshaking
between the processor and the debugger.
– Bit 1 (W): Denotes whether the programmer can read a data through the Debug
– Bit 0 (R): Denotes whether the programmer can send data from the Debug Comms
Comms Data Register. If the device is busy W = 0, then the programmer must poll
until W = 1.
Data Register. If R = 1, data previously placed there through the scan chain has not
been collected by the device and so the programmer must wait.
r/w
4
Address
Address
Decoder
126. Commands are run by the programmer through the serial interface that
5
0
31
Debug Comms Control Register
Debug Comms Data Register
Data
32
6175K–ATARM–30-Aug-10
0
TDO
Related parts for AT91SAM7S32-AU-999
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![AT91SAM7S32](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
ATMEL Corporation
Datasheet:
![AT91SAM7S32-AU-001](/photos/6/76/67647/453-48-lqfp_tmb.jpg)
Part Number:
Description:
IC ARM7 MCU 32BIT 32K 48LQFP
Manufacturer:
Atmel
Datasheet:
![AT91SAM7S32-AI](/images/no-image3.png)
Part Number:
Description:
AT91 ARM Thumb-based Microcontrollers
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
![AT91SAM7S32-MU](/photos/7/34/73471/48-vqfn-6_543-5130_01-4_tmb.jpg)
Part Number:
Description:
IC ARM7 MCU FLASH 32K 48QFN
Manufacturer:
Atmel
Datasheet:
![AT91SAM7S32-MU-999](/photos/7/34/73471/48-vqfn-6_543-5130_01-4_tmb.jpg)
Part Number:
Description:
IC MCU ARM7 32KB FLASH 48-VQFN
Manufacturer:
Atmel
Datasheet:
![ATSTK600](/photos/9/20/92038/atstk600_tmb.jpg)
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
![U641B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
![U4082B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
![U4255BM-M](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B-P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
![TDA4470](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet: