參數資料
型號: PIC16C620A-20/SO
廠商: Microchip Technology
文件頁數: 37/89頁
文件大小: 0K
描述: IC MCU OTP 512X14 COMP 18SOIC
產品培訓模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標準包裝: 42
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
外圍設備: 欠壓檢測/復位,POR,WDT
輸入/輸出數: 13
程序存儲器容量: 896B(512 x 14)
程序存儲器類型: OTP
RAM 容量: 96 x 8
電壓 - 電源 (Vcc/Vdd): 2.5 V ~ 5.5 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 18-SOIC(0.295",7.50mm 寬)
包裝: 管件
產品目錄頁面: 636 (CN2011-ZH PDF)
配用: XLT18SO-1-ND - SOCKET TRANSITION 18SOIC 300MIL
ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
309-1075-ND - ADAPTER 18-SOIC TO 18-SOIC
AC164010-ND - MODULE SKT PROMATEII DIP/SOIC
42
AT90S1200
0838H–AVR–03/02
Programming the EEPROM
The programming algorithm for the EEPROM data memory is as follows (refer to “Pro-
gramming the Flash” for details on command, address and data loading):
1.
A: Load Command “0001 0001”.
2.
C: Load Address Low Byte ($00 - $3F).
3.
D: Load Data Low Byte ($00 - $FF).
4.
E: Write Data Low Byte.
Reading the EEPROM
The algorithm for reading the EEPROM memory is as follows (refer to “Programming the
Flash” for details on command and address loading):
1.
A: Load Command “0000 0011”.
2.
C: Load Address Low Byte ($00 - $3F).
3.
Set OE to “0”, and BS to “0”. The EEPROM data byte can now be read at DATA.
4.
Set OE to “1”.
Programming the Fuse Bits
The algorithm for programming the Fuse bits is as follows (refer to “Programming the
Flash” for details on command and data loading):
1.
A: Load Command “0100 0000”.
2.
D: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
Bit 5 = SPIEN Fuse
Bit 0 = RCEN Fuse
Bit 7 - 6, 4 - 1 = “1”. These bits are reserved and should be left unprogrammed (“1”).
3.
Give WR a t
WLWH_PFB wide negative pulse to execute the programming; tWLWH_PFB
is found in Table 17. Programming the Fuse bits does not generate any activity
on the RDY/BSY pin.
Programming the Lock Bits
The algorithm for programming the Lock bits is as follows (refer to “Programming the
Flash” for details on command and data loading):
1.
A: Load Command “0010 0000”.
2.
D: Load Data Low Byte. Bit n = “0” programs the Lock bit.
Bit 2 = Lock Bit2
Bit 1 = Lock Bit1
Bit 7 - 3, 0 = “1”. These bits are reserved and should be left unprogrammed (“1”).
3.
E: Write Data Low Byte.
The Lock bits can only be cleared by executing Chip Erase.
Reading the Fuse and Lock
Bits
The algorithm for reading the Fuse and Lock bits is as follows (refer to “Programming
the Flash” on page 39 for details on command loading):
1.
A: Load Command “0000 0100”.
2.
Set OE to “0”, and BS to “1”. The status of Fuse and Lock bits can now be read
at DATA (“0” means programmed).
Bit 7 = Lock Bit1
Bit 6 = Lock Bit2
Bit 5 = SPIEN Fuse
Bit 0 = RCEN Fuse
3.
Set OE to “1”.
Observe especially that BS needs to be set to “1”.
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