参数资料
型号: C8051F220R
厂商: Silicon Laboratories Inc
文件页数: 48/146页
文件大小: 0K
描述: IC 8051 MCU 8K FLASH 48TQFP
标准包装: 1
系列: C8051F2xx
核心处理器: 8051
芯体尺寸: 8-位
速度: 25MHz
连通性: SPI,UART/USART
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 32
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 32x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 48-TQFP
包装: 剪切带 (CT)
其它名称: 336-1008-1
C8051F2xx
Rev. 1.6
141
JTAG Register Definition 18.2. FLASHCON: JTAG Flash Control
This register determines how the Flash interface logic will respond to reads and writes to the FLASH-
DAT Register.
Bits7–4: WRMD3–0: Write Mode Select Bits.
The Write Mode Select Bits control how the interface logic responds to writes to the FLASH-
DAT Register per the following values:
0000:
A FLASHDAT write replaces the data in the FLASHDAT register, but is otherwise
ignored.
0001:
A FLASHDAT write initiates a write of FLASHDAT into the memory address selected
by the FLASHADR register. FLASHADR is incremented by one when complete.
0010:
A FLASHDAT write initiates an erasure (sets all bytes to 0xFF) of the Flash page
containing the address in FLASHADR. FLASHDAT must be 0xA5 for the erase to
occur. FLASHADR is not affected. If FLASHADR = 0x1DFE – 0x1DFF, the entire
user space will be erased (i.e. entire Flash memory except for Reserved area
0x1E00 – 0x1FFF).
(All other values for WRMD3–0 are reserved.)
Bits3–0: RDMD3–0: Read Mode Select Bits.
The Read Mode Select Bits control how the interface logic responds to reads to the FLASH-
DAT Register per the following values:
0000:
A FLASHDAT read provides the data in the FLASHDAT register, but is otherwise
ignored.
0001:
A FLASHDAT read initiates a read of the byte addressed by the FLASHADR register
if no operation is currently active. This mode is used for block reads.
0010:
A FLASHDAT read initiates a read of the byte addressed by FLASHADR only if no
operation is active and any data from a previous read has already been read from
FLASHDAT. This mode allows single bytes to be read (or the last byte of a block)
without initiating an extra read.
(All other values for RDMD3–0 are reserved.)
JTAG Register Definition 18.3. FLASHADR: JTAG Flash Address
This register holds the address for all JTAG Flash read, write, and erase operations. This register
autoincrements after each read or write, regardless of whether the operation succeeded or failed.
Bits15–0: Flash Operation 16-bit Address.
Reset Value
WRMD3
WRMD2
WRMD1
WRMD0
RDMD3
RDMD2
RDMD1
RDMD0
00000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Reset Value
0x0000
Bit15
Bit0
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