AT91SAM7S32B-MU Atmel, AT91SAM7S32B-MU Datasheet - Page 52

• Manufacturer Part Number: AT91SAM7S32B-MU
• Description: IC MCU ARM7 32KB FLASH 48-VQFN
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S32B-MU

• 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-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-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: -

12.5.4
12.5.4.1
52
AT91SAM7S Series Preliminary
IEEE 1149.1 JTAG Boundary Scan
JTAG Boundary-scan Register
Table 12-2.
For further details on the Debug Unit, see the Debug Unit section.
IEEE 1149.1 JTAG Boundary Scan allows pin-level access independent of the device packaging
technology.
IEEE 1149.1 JTAG Boundary Scan is enabled when JTAGSEL is high. The SAMPLE, EXTEST
and BYPASS functions are implemented. In ICE debug mode, the ARM processor responds
with a non-JTAG chip ID that identifies the processor to the ICE system. This is not IEEE 1149.1
JTAG-compliant.
It is not possible to switch directly between JTAG and ICE operations. A chip reset must be per-
formed after JTAGSEL is changed.
A Boundary-scan Descriptor Language (BSDL) file is provided to set up testing.
The Boundary-scan Register (BSR) contains 96 bits that correspond to active pins and associ-
ated control signals.
Each AT91SAM7Sxx input/output pin corresponds to a 3-bit register in the BSR. The OUTPUT
bit contains data that can be forced on the pad. The INPUT bit facilitates the observability of data
applied to the pad. The CONTROL bit selects the direction of the pad.
Table 12-3.
AT91SAM7S64 Rev C
AT91SAM7S128 Rev A
AT91SAM7S128 Rev B
AT91SAM7S128 Rev C
AT91SAM7S256 Rev A
AT91SAM7S256 Rev B
AT91SAM7S256 Rev C
AT91SAM7S512 Rev A and B
Bit Number
96
95
94
93
92
91
AT91SAM7S Series Debug Unit Chip ID (Continued)
AT91SAM7Sxx JTAG Boundary Scan Register
PA17/PGMD5/AD0
PA18/PGMD6/AD1
Pin Name
Pin Type
IN/OUT
IN/OUT
0x270B0A40
0x270C0740
0x270A0741
0x270A0742
0x270D0940
0x270B0941
0x270B0942
0x27090544
6175K–ATARM–30-Aug-10
Associated BSR
CONTROL
CONTROL
OUTPUT
OUTPUT
INPUT
INPUT
Cells