参数资料
型号: AT91SAM7S32B-AU-999
厂商: Atmel
文件页数: 94/165页
文件大小: 0K
描述: IC MCU ARM7 32KB FLASH 48LQFP
产品培训模块: MCU Product Line Introduction
标准包装: 2,000
系列: SAM7S
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 55MHz
连通性: I²C,SPI,SSC,UART/USART
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 21
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 8K x 8
电压 - 电源 (Vcc/Vdd): 1.65 V ~ 1.95 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 48-LQFP
包装: 带卷 (TR)
配用: AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9
AT91SAM7S-EK-ND - KIT EVAL FOR ARM AT91SAM7S
34
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
10.3
Peripheral Multiplexing on PIO Lines
The SAM7S Series features one PIO controller, PIOA, that multiplexes the I/O lines of the peripheral set.
PIO Controller A controls 32 lines (21 lines for SAM7S32/16). Each line can be assigned to one of two peripheral
functions, A or B. Some of them can also be multiplexed with the analog inputs of the ADC Controller.
“Multiplexing on PIO Controller A (SAM7S32/16),” on page 36 define how the I/O lines of the peripherals A, B or the
analog inputs are multiplexed on the PIO Controller A. The two columns “Function” and “Comments” have been inserted
for the user’s own comments; they may be used to track how pins are defined in an application.
Note that some peripheral functions that are output only may be duplicated in the table.
All pins reset in their Parallel I/O lines function are configured as input with the programmable pull-up enabled, so that the
device is maintained in a static state as soon as a reset is detected.
Table 10-2. Peripheral Identifiers (SAM7S32/16)
Peripheral
ID
Peripheral
Mnemonic
Peripheral
Name
External
Interrupt
0
AIC
Advanced Interrupt Controller
FIQ
1
System
2
PIOA
Parallel I/O Controller A
3
Reserved
4
ADC
Analog-to Digital Converter
5
SPI
Serial Peripheral Interface
6
US
USART
7
Reserved
8
SSC
Synchronous Serial Controller
9
TWI
Two-wire Interface
10
PWMC
PWM Controller
11
Reserved
12
TC0
Timer/Counter 0
13
TC1
Timer/Counter 1
14
TC2
Timer/Counter 2
15 - 29
Reserved
30
AIC
Advanced Interrupt Controller
IRQ0
31
Reserved
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