参数资料
型号: AT89LP4052-16SI
厂商: Atmel
文件页数: 41/94页
文件大小: 0K
描述: IC 8051 MCU FLASH 4K 20SOIC
标准包装: 38
系列: 89LP
核心处理器: 8051
芯体尺寸: 8-位
速度: 16MHz
连通性: SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 15
程序存储器容量: 4KB(4K x 8)
程序存储器类型: 闪存
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.4 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
包装: 管件
其它名称: AT89LP4052-20SI
AT89LP4052-20SI-ND
46
3547J–MICRO–10/09
AT89LP2052/LP4052
Table 19-2.
SPSR – SPI Status Register
SPSR Address = AAH
Reset Value = 000X X000B
Not Bit Addressable
SPIF
WCOL
LDEN
DISSO
ENH
Bit
76543
210
Symbol
Function
SPIF
SP interrupt flag. When a serial transfer is complete, the SPIF bit is set and an interrupt is generated if SPIE = 1 and
ES = 1. The SPIF bit is cleared by reading the SPI status register followed by reading/writing the SPI data register.
WCOL
When ENH = 0: Write collision flag. The WCOL bit is set if the SPI data register is written during a data transfer. During
data transfer, the result of reading the SPDR register may be incorrect, and writing to it has no effect. The WCOL bit
(and the SPIF bit) are cleared by reading the SPI status register followed by reading/writing the SPI data register.
When ENH = 1: WCOL works in Enhanced mode as Tx Buffer Full. Writing during WCOL = 1 in enhanced mode will
overwrite the waiting data already present in the Tx Buffer. In this mode, WCOL is no longer reset by the SPIF reset but
is reset when the write buffer has been unloaded into the serial shift register.
LDEN
Load enable for the Tx buffer in enhanced SPI mode.
When ENH is set, it is safe to load the Tx Buffer while LDEN = 1 and WCOL = 0. LDEN is high during bits 0 - 3 and is low
during bits 4 - 7 of the SPI serial byte transmission time frame.
DISSO
Disable slave output bit.
When set, this bit causes the MISO pin to be tri-stated so more than one slave device can share the same interface with
a single master. Normally, the first byte in a transmission could be the slave address and only the selected slave should
clear its DISSO bit.
ENH
Enhanced SPI mode select bit. When ENH = 0, SPI is in normal mode, i.e. without write double buffering.
When ENH = 1, SPI is in enhanced mode with write double buffering. The Tx buffer shares the same address with the
SPDR register.
Table 19-3.
SPDR – SPI Data Register
SPDR Address = 86H
Reset Value = 00H (after cold reset)
unchanged (after warm reset)
Not Bit Addressable
SPD7
SPD6
SPD5
SPD4
SPD3
SPD2
SPD1
SPD0
Bit
76543210
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AT89LP4052-16XI 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP4052-16XU 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP4052-20PU 功能描述:8位微控制器 -MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
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