参数资料
型号: PIC16F74T-I/PT
厂商: Microchip Technology
文件页数: 57/104页
文件大小: 0K
描述: IC MCU FLASH 4KX14 A/D 44TQFP
产品培训模块: Asynchronous Stimulus
标准包装: 1,200
系列: PIC® 16F
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 33
程序存储器容量: 7KB(4K x 14)
程序存储器类型: 闪存
RAM 容量: 192 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 5.5 V
数据转换器: A/D 8x8b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-TQFP
包装: 带卷 (TR)
Micrel, Inc.
KSZ8851-16MLLJ
March 2010
48
M9999-030210-1.0
Memory BIST Info Register (0x24 – 0x25): MBIR
This register indicates the build-in self test result for both TX and RX memories after power-up/reset.
Bit
Default Value
R/W
Description
15-13
0x0
RO
Reserved.
12
-
RO
TXMBF TX Memory BIST Test Finish
When set, it indicates the Memory Built In Self Test completion for the TX Memory.
11
-
RO
TXMBFA TX Memory BIST Test Fail
When set, it indicates the TX Memory Built In Self Test has failed.
10-8
-
RO
TXMBFC TX Memory BIST Test Fail Count
To indicate the TX Memory Built In Self Test failed count
7-5
-
RO
Reserved.
4
-
RO
RXMBF RX Memory Bist Finish
When set, it indicates the Memory Built In Self Test completion for the RX Memory.
3
-
RO
RXMBFA RX Memory Bist Fail
When set, it indicates the RX Memory Built In Self Test has failed.
2-0
-
RO
RXMBFC RX Memory BIST Test Fail Count
To indicate the RX Memory Built In Self Test failed count.
Global Reset Register (0x26 – 0x27): GRR
This register controls the global and QMU reset functions with information programmed by the CPU.
Bit
Default Value
R/W
Description
15-2
0x0000
RO
Reserved.
1
0
RW
QMU Module Soft Reset
1: Software reset is active to clear both TXQ and RXQ memories.
0: Software reset is inactive.
QMU software reset will flush out all TX/RX packet data inside the TXQ and RXQ
memories and reset all QMU registers to default value.
0
RW
Global Soft Reset
1: Software reset is active.
0: Software reset is inactive.
Global software reset will affect PHY, MAC, QMU, DMA, and the switch core, all
registers value are set to default value.
0x28 – 0x29: Reserved
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