参数资料
型号: PIC16C621-20/SO
厂商: Microchip Technology
文件页数: 35/89页
文件大小: 0K
描述: IC MCU OTP 1KX14 COMP 18SOIC
产品培训模块: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
标准包装: 42
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 13
程序存储器容量: 1.75KB(1K x 14)
程序存储器类型: OTP
RAM 容量: 80 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 6 V
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 18-SOIC(0.295",7.50mm 宽)
包装: 管件
配用: XLT18SO-1-ND - SOCKET TRANSITION 18SOIC 300MIL
ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
309-1075-ND - ADAPTER 18-SOIC TO 18-SOIC
309-1011-ND - ADAPTER 18-SOIC TO 18-DIP
309-1010-ND - ADAPTER 18-SOIC TO 18-DIP
AC164010-ND - MODULE SKT PROMATEII DIP/SOIC
40
AT90S1200
0838H–AVR–03/02
4.
Give XTAL1 a positive pulse. This loads the command.
B: Load Address High Byte
1.
Set XA1, XA0 to “00”. This enables address loading.
2.
Set BS to “1”. This selects high byte.
3.
Set DATA = Address high byte ($00 - $01).
4.
Give XTAL1 a positive pulse. This loads the address high byte.
C: Load Address Low Byte
1.
Set XA1, XA0 to “00”. This enables address loading.
2.
Set BS to “0”. This selects low byte.
3.
Set DATA = Address low byte ($00 - $FF).
4.
Give XTAL1 a positive pulse. This loads the address low byte.
D: Load Data Low Byte
1.
Set XA1, XA0 to “01”. This enables data loading.
2.
Set DATA = Data low byte ($00 - $FF).
3.
Give XTAL1 a positive pulse. This loads the data low byte.
E: Write Data Low Byte
1.
Set BS to “0”. This selects low data.
2.
Give WR a negative pulse. This starts programming of the data byte. RDY/BSY
goes low.
3.
Wait until RDY/BSY goes high to program the next byte.
(See Figure 31 for signal waveforms.)
F: Load Data High Byte
1.
Set XA1, XA0 to “01”. This enables data loading.
2.
Set DATA = Data high byte ($00 - $FF).
3.
Give XTAL1 a positive pulse. This loads the data high byte.
G: Write Data High Byte
1.
Set BS to “1”. This selects high data.
2.
Give WR a negative pulse. This starts programming of the data byte. RDY/BSY
goes low.
3.
Wait until RDY/BSY goes high to program the next byte.
(See Figure 32 for signal waveforms.)
The loaded command and address are retained in the device during programming. For
efficient programming, the following should be considered:
The command needs only be loaded once when writing or reading multiple memory
locations.
Address high byte needs only be loaded before programming a new 256-word page
in the Flash.
Skip writing the data value $FF; that is, the contents of the entire Flash and
EEPROM after a Chip Erase.
These considerations also apply to EEPROM programming and Flash, EEPROM and
signature byte reading.
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