at91m42800 ATMEL Corporation, at91m42800 Datasheet - Page 7

• Manufacturer Part Number: at91m42800
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Block Diagram
Figure 3. AT91M42800
PA14/NPCSA0/NSSA
PA21/NPCSB0/NSSB
PA9/TXD1/NTRI
PA15/NPCSA1
PA16/NPCSA2
PA17/NPCSA3
PA22/NPCSB1
PA23/NPCSB2
PA24/NPCSB3
PA11/SPCKA
PA18/SPCKB
PA12/MISOA
PA13/MOSIA
PA19/MISOB
PA20/MOSIB
PA25/MCKO
PA10/RXD1
PA7/RXD0
PA5/SCK0
PA6/TXD0
PA8/SCK1
PA0/IRQ0
PA1/IRQ1
PA2/IRQ2
PA3/IRQ3
JTAGSEL
PLLRCA
PLLRCB
PA4/FIQ
NTRST
XOUT
PA26
TMS
TDO
TCK
XIN
TDI
O
P
I
Interrupt Controller
AIC: Advanced
PMC: Power Management
SPIA: Serial
SPIB: Serial
Peripheral
Peripheral
USART0
USART1
Interface
Interface
Controller
Chip ID
Embedded
ICE
ARM7TDMI
Channels
Channels
Channels
Channels
2 PDC
2 PDC
2 PDC
2 PDC
Core
Internal RAM
Controller
8K Bytes
ASB
PIO: Parallel I/O Controller
AMBA™ Bridge
ASB
APB
TC: Timer/
TC: Timer/
Watchdog
Real-time
EBI User
Interface
Counter
Counter
System
Block 0
Block 1
Period
Interval
Timers
Reset
TC0
TC1
TC2
TC3
TC4
TC5
P
O
I
NRST
D0-D15
A0/NLB
A1-A19
NRD/NOE
NWR0/NWE
NWR1/NUB
NWAIT
NCS0
NCS1
PA27/BMS
PA28/HOLDA
PA29HOLD
PB0/NCS2
PB1/NCS3
PB2/A20/CS7
PB3/A21/CS6
PB4/A22/CS5
PB5/A23/CS4
PB6/TCLK0
PB9/TCLK1
PB12/TCLK2
PB7/TIOA0
PB8/TIOB0
PB10/TIOA1
PB11/TIOB1
PB13/TIOA2
PB14/TIOB2
PB15/TCLK3
PB18/TCLK4
PB21/TCLK5
PB16/TIOA3
PB17/TIOB3
PB19/TIOA4
PB20/TIOB4
PB22/TIOA5
PB23/TIOB5
NWDOVF
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