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1745D–ATARM–04-Nov-05
AT91M55800A
4. Block Diagram
ARM7TDMI Core
Embedded
ICE
Reset
EBI: External
Bus Interface
Internal RAM
8K Bytes
ASB
Controller
AIC:
Advanced
Interrupt
Controller
AMBA Bridge
TC: Timer
Counter
Block 0
TC0
TC1
TC2
USART0
USART1
2 PDC
Channels
2 PDC
Channels
APB
ASB
P
I
O
B
P
I
O
A
P
I
O
B
NRST
D0 - D15
A1 - A23
A0/NLB
NRD/NOE
NWR0/NWE
NWR1/NUB
NCS0 - NCS7
PB19/TCLK0
PB22/TCLK1
PB25/TCLK2
PB20/TIOA0
PB21/TIOB0
PB23/TIOA1
PB24/TIOB1
PB26/TIOA2
PB27/TIOB2
PA10/IRQ1
PA11/IRQ2
PA12/IRQ3
PA13/FIQ
PA14/SCK0
PA15/TXD0
PA16/RXD0
PA17/SCK1
PA18/TXD1/NTRI
PA19/RXD1
PB11
PB12
PB13
PB14
PB15
PB16
TMS
TDO
TDI
TCK
NTRST
USART2
2 PDC
Channels
PA20/SCK2
PA21/TXD2
PA22/RXD2
SPI: Serial
Peripheral
Interface
TC: Timer
Counter
Block 1
TC3
TC4
TC5
PA0/TCLK3
PA3/TCLK4
PA6/TCLK5
PA1/TIOA3
PA2/TIOB3
PA4/TIOA4
PA5/TIOB4
PA7/TIOA5
PA8/TIOB5
PB10
PB4/IRQ5
PB5
PB1
PB2
PB8
PB9
PB3/IRQ4
PA9/IRQ0
PA24/MISO
PA25/MOSI
PA26/NPCS0/NSS
PA27/NPCS1
PA23/SPCK
PA28/NPCS2
PA29/NPCS3
PB18/BMS
EBI User
Interface
2 PDC
Channels
PB0
PB17
Clock
Generator
PLL
MCKO
PLLRC
XIN
XOUT
16 MHz
Chip ID
NWAIT
JTAGSEL
GNDBU
JTAGSEL
4-Channel
ADC0
AD0
AD1
AD2
AD3
4-Channel
ADC1
AD4
AD5
AD6
AD7
ADVREF
PB6/AD0TRIG
PB7/AD1TRIG
PIOB
Controller
PIOA Controller
WD: Watchdog Timer
NWDOVF
P
I
O
A
VDDIO, VDDCORE
GND
JTAG
WAKEUP
SHDN
DAC0
DAC1
DAVREF
DA0
DA1
VDDPLL
XOUT32
32.768 kHz
VDDBU
NRSTBU
RTC:
Real Time
Clock
APMC:
Advanced
Power
Management
Controller
GNDPLL
VDDA
GNDA
XIN32
Battery Backup
Analog