参数资料
型号: AT91M55800A-33CJ-999
厂商: Atmel
文件页数: 26/28页
文件大小: 0K
描述: IC MCU 32BIT RISC 176LFBGA
标准包装: 1
系列: AT91
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 33MHz
连通性: EBI/EMI,SPI,UART/USART
外围设备: POR,WDT
输入/输出数: 58
程序存储器类型: ROMless
RAM 容量: 8K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 8x10b; D/A 2x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 176-LFBGA
包装: 剪切带 (CT)
其它名称: AT91M55800A-33CJ-999CT
7
1745FS–ATARM–18-Apr-06
AT91M55800A Summary
3.
Pin Description
Table 3-1.
Pin Description
Module
Name
Function
Type
Active
Level
Comments
EBI
A0 - A23
Address bus
Output
D0 - D15
Data bus
I/O
NCS0 - NCS7
Chip select
Output
Low
NWR0
Lower byte 0 write signal
Output
Low
Used in Byte-write option
NWR1
Lower byte 1 write signal
Output
Low
Used in Byte-write option
NRD
Read signal
Output
Low
Used in Byte-write option
NWE
Write enable
Output
Low
Used in Byte-select option
NOE
Output enable
Output
Low
Used in Byte-select option
NUB
Upper byte-select
Output
Low
Used in Byte-select option
NLB
Lower byte-select
Output
Low
Used in Byte-select option
NWAIT
Wait input
Input
Low
BMS
Boot mode select
Input
Sampled during reset
AIC
IRQ0 - IRQ5
External interrupt request
Input
PIO-controlled after reset
FIQ
Fast external interrupt request
Input
PIO-controlled after reset
Timer
TCLK0 - TCLK5
Timer external clock
Input
PIO-controlled after reset
TIOA0 - TIOA5
Multipurpose timer I/O pin A
I/O
PIO-controlled after reset
TIOB0 - TIOB5
Multipurpose timer I/O pin B
I/O
PIO-controlled after reset
USART
SCK0 - SCK2
External serial clock
I/O
PIO-controlled after reset
TXD0 - TXD2
Transmit data output
Output
PIO-controlled after reset
RXD0 - RXD2
Receive data input
Input
PIO-controlled after reset
SPI
SPCK
SPI clock
I/O
PIO-controlled after reset
MISO
Master in slave out
I/O
PIO-controlled after reset
MOSI
Master out slave in
I/O
PIO-controlled after reset
NSS
Slave select
Input
Low
PIO-controlled after reset
NPCS0 - NPCS3
Peripheral chip select
Output
Low
PIO-controlled after reset
PIO
PA0 - PA29
Parallel I/O port A
I/O
Input after reset
PB0 - PB27
Parallel I/O port B
I/O
Input after reset
WD
NWDOVF
Watchdog timer overflow
Output
Low
Open drain
ADC
AD0 - AD7
Analog input channels 0 - 7
Analog in
AD0TRIG
ADC0 external trigger
Input
PIO-controlled after reset
AD1TRIG
ADC1 external trigger
Input
PIO-controlled after reset
ADVREF
Analog reference
Analog ref
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