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STC89C53RC датащи(PDF) 125 Page - STCmicro Technology Co,.Ltd

номер детали STC89C53RC
подробное описание детали  Enhanced 80C51 Central Processing Unit ,6T or 12T per machine cycle
PDF  165 Pages
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производитель  STC [STCmicro Technology Co,.Ltd]
домашняя страница  http://www.stcmicro.com/
Logo STC - STCmicro Technology Co,.Ltd

STC89C53RC датащи(HTML) 125 Page - STCmicro Technology Co,.Ltd

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ISP_ADDRL: ISP/IAP Flash Address Low
LSB
bit
B7
B6
B5
B4
B3
B2
B1
B0
name
ISP_ADDRL is the low port for all ISP/IAP modes. In page erase operation, it is ignored.
ISP_CMD: ISP/IAP Flash Command Register
LSB
bit
B7
B6
B5
B4
B3
B2
B1
B0
name
-
-
-
-
-
MS2
MS1
MS0
B7~B2: Reserved.
MS2, MS1, MS0 : ISP/IAP operating mode selection. IAP_CMD is used to select the flash mode for
performing numerous ISP/IAP function or used to access protected SFRs.
0, 0, 0 : Standby
0, 0, 1 : Data Flash/EEPROM read.
0, 1, 0 : Data Flash/EEPROM program.
0, 1, 1 : Data Flash/EEPROM page erase.
ISP_TRIG: ISP/IAP Flash Command Trigger.
LSB
bit
B7
B6
B5
B4
B3
B2
B1
B0
name
ISP_TRIG is the command port for triggering ISP/IAP activity and protected SFRs access. If ISP_TRIG is filled
with sequential 0x46h, 0xB9h and if ISPEN(ISP_CONTR.7) = 1, ISP/IAP activity or protected SFRs access will
triggered.
ISP_DATA: ISP/IAP Flash Data Register
LSB
bit
B7
B6
B5
B4
B3
B2
B1
B0
name
ISP_DATA is the data port register for ISP/IAP operation. The data in ISP_DATA will be written into
the desired address in operating ISP/IAP write and it is the data window of readout in operating ISP/
IAP read.
ISP_ADDRH: ISP/IAP Flash Address High
LSB
bit
B7
B6
B5
B4
B3
B2
B1
B0
name
ISP_ADDRH is the high-byte address port for all ISP/IAP modes.
ISP_ADDRH[7:5] must be cleared to 000, if one bit of ISP_ADDRH[7:5] is set, the IAP/ISP write
function must fail.
125



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