M42800A Atmel Corporation, M42800A Datasheet - Page 201

• Manufacturer Part Number: M42800A
• Manufacturer: Atmel Corporation

Specifications of M42800A

• Flash (kbytes): 0 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 33 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 54
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 8
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.3/5.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

20. JTAG Boundary-scan Register
Table 20-1.
1779D–ATARM–14-Apr-06
Number
237
236
235
234
233
232
231
230
229
228
227
226
225
224
223
222
221
220
219
218
217
216
215
214
Bit
Pin Name
PA25/MCKO
PA24/NPCSB3
PA23/NPCSB2
PA22/NPCSB1
PA21/NPCSB0/
NSSB
PA20/MOSIB
PA19/MISOB
PA18/SPCKB
Boundary-scan Register
The Boundary-scan Register (BSR) contains 237 bits which correspond to active pins and
associated control signals.
Each AT91M42800A input pin has a corresponding bit in the Boundary-scan Register for
observability.
Each AT91M42800A output pin has a corresponding 2-bit register in the BSR. The OUTPUT
bit contains data that can be forced on the pad. The CTRL bit can put the pad into high
impedance.
Each AT91M42800A in/out 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 is for the observability of data
applied to the pad. The CTRL bit selects the direction of the pad.
Pin Type
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
Associated
BSR Cells
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
Number
210
209
208
207
206
205
204
203
202
201
200
199
198
197
196
195
194
193
192
191
190
189
188
187
Bit
Pin Name
PA16/NPCSA2
PA15/NPCSA1
PA14/NPCSA0/
NSSA
PA13/MOSIA
PA12/MISOA
PA11/SPCKA
PA10/RXD1
PA9/TXD1/NTRI
AT91M42800A
Pin Type
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
Associated
BSR Cells
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
CTRL
201