参数资料
型号: AT89C51AC3-SLSIM
厂商: Atmel
文件页数: 114/140页
文件大小: 0K
描述: IC 8051 MCU FLASH 64K 44PLCC
标准包装: 27
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 60MHz
连通性: UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 36
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 2.25K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
2009 Microchip Technology Inc.
DS70286C-page 73
dsPIC33FJXXXGPX06/X08/X10
REGISTER 5-1:
NVMCON: FLASH MEMORY CONTROL REGISTER
R/SO-0(1)
R/W-0(1)
U-0
WR
WREN
WRERR
bit 15
bit 8
U-0
R/W-0(1)
U-0
R/W-0(1)
ERASE
—NVMOP<3:0>(2)
bit 7
bit 0
Legend:
SO = Settable only bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
WR: Write Control bit
1
= Initiates a Flash memory program or erase operation. The operation is self-timed and the bit is
cleared by hardware once operation is complete
0
= Program or erase operation is complete and inactive
bit 14
WREN: Write Enable bit
1
= Enable Flash program/erase operations
0
= Inhibit Flash program/erase operations
bit 13
WRERR: Write Sequence Error Flag bit
1
= An improper program or erase sequence attempt or termination has occurred (bit is set
automatically on any set attempt of the WR bit)
0
= The program or erase operation completed normally
bit 12-7
Unimplemented: Read as ‘0’
bit 6
ERASE: Erase/Program Enable bit
1
= Perform the erase operation specified by NVMOP<3:0> on the next WR command
0
= Perform the program operation specified by NVMOP<3:0> on the next WR command
bit 5-4
Unimplemented: Read as ‘0’
bit 3-0
NVMOP<3:0>: NVM Operation Select bits(2)
If ERASE = 1:
1111
= Memory bulk erase operation
1110
= Reserved
1101
= Erase General Segment
1100
= Erase Secure Segment
1011
= Reserved
0011
= No operation
0010
= Memory page erase operation
0001
= No operation
0000
= Erase a single Configuration register byte
If ERASE = 0:
1111
= No operation
1110
= Reserved
1101
= No operation
1100
= No operation
1011
= Reserved
0011
= Memory word program operation
0010
= No operation
0001
= Memory row program operation
0000
= Program a single Configuration register byte
Note 1: These bits can only be reset on POR.
2: All other combinations of NVMOP<3:0> are unimplemented.
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