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參數(shù)資料
| 型號(hào)： | PIC16F1825-E/ML |
| 廠商： | Microchip Technology |
| 文件頁(yè)數(shù)： | 79/208頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | MCU PIC 14K FLASH 1K RAM 16QFN |
| 產(chǎn)品培訓(xùn)模塊： | 8-bit PIC® Microcontroller Portfolio |
| 特色產(chǎn)品： | Extreme Low Power (XLP) Microcontrollers |
| 標(biāo)準(zhǔn)包裝： | 91 |
| 系列： | PIC® XLP™ mTouch™ 16F |
| 核心處理器： | PIC |
| 芯體尺寸： | 8-位 |
| 速度： | 32MHz |
| 連通性： | I²C，LIN，SPI，UART/USART |
| 外圍設(shè)備： | 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 11 |
| 程序存儲(chǔ)器容量： | 14KB（8K x 14） |
| 程序存儲(chǔ)器類型： | 閃存 |
| EEPROM 大?。?/td> | 256 x 8 |
| RAM 容量： | 1K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.8 V ~ 5.5 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 16-VQFN 裸露焊盤 |
| 包裝： | 管件 |
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194
ATmega8515(L)
2512K–AVR–01/10
Serial Programming
Algorithm
When writing serial data to the ATmega8515, data is clocked on the rising edge of SCK.
When reading data from the ATmega8515, data is clocked on the falling edge of SCK.
See Figure 85 for timing details.
To program and verify the ATmega8515 in the Serial Programming mode, the following
sequence is recommended (See four byte instruction formats in Table 94.):
1.
Power-up sequence:
Apply power between V
CC and GND while RESET and SCK are set to “0”. In
some systems, the programmer can not guarantee that SCK is held low during
Power-up. In this case, RESET must be given a positive pulse of at least two
CPU clock cycles duration after SCK has been set to “0”.
2.
Wait for at least 20 ms and enable serial programming by sending the Program-
ming Enable serial instruction to pin MOSI.
3.
The Serial Programming instructions will not work if the communication is out of
synchronization. When in synchronization, the second byte ($53), will echo back
when issuing the third byte of the Programming Enable instruction. Whether the
echo is correct or not, all four bytes of the instruction must be transmitted. If the
$53 did not echo back, give RESET a positive pulse and issue a new Program-
ming Enable command.
4.
The Flash is programmed one page at a time. The page size is found in Table 89
on page 183. The memory page is loaded one byte at a time by supplying the 5
LSB of the address and data together with the Load Program memory Page
instruction. To ensure correct loading of the page, the data low byte must be
loaded before data high byte is applied for a given address. The Program mem-
ory Page is stored by loading the Write Program memory Page instruction with
the 7 MSB of the address. If polling is not used, the user must wait at least
t
WD_FLASH before issuing the next page, see Table 93. Accessing the serial pro-
gramming interface before the Flash write operation completes can result in
incorrect programming.
5.
The EEPROM array is programmed one byte at a time by supplying the address
and data together with the appropriate Write instruction. An EEPROM memory
location is first automatically erased before new data is written. If polling is not
used, the user must wait at least t
WD_EEPROM before issuing the next byte, see
Table 93. In a chip erased device, no $FFs in the data file(s) need to be
programmed.
6.
Any memory location can be verified by using the Read instruction which returns
the content at the selected address at serial output MISO.
7.
At the end of the programming session, RESET can be set high to commence
normal operation.
8.
Power-off sequence (if needed):
Set RESET to “1”.
Turn V
CC power off.
Data Polling Flash
When a page is being programmed into the Flash, reading an address location within
the page being programmed will give the value $FF. At the time the device is ready for a
new page, the programmed value will read correctly. This is used to determine when the
next page can be written. Note that the entire page is written simultaneously and any
address within the page can be used for polling. Data polling of the Flash will not work
for the value $FF, so when programming this value, the user will have to wait for at least
t
WD_FLASH before programming the next page. As a chip erased device contains $FF in
all locations, programming of addresses that are meant to contain $FF, can be skipped.
See Table 93 for t
WD_FLASH value.
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| PIC16F1825-I/ML | 功能描述:8位微控制器 -MCU 14KB FL 1KBRAM 32MHz 12I/0 Enhanced Mid RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC16F1825-I/P | 功能描述:8位微控制器 -MCU 14KB FL 1KBRAM 32MHz 12I/0 Enhanced Mid RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC16F1825-I/SL | 功能描述:8位微控制器 -MCU 14KB FL 1KBRAM 32MHz 12I/0 Enhanced Mid RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC16F1825-I/ST | 功能描述:8位微控制器 -MCU 14KB FL 1KBRAM 32MHz 12I/0 Enhanced Mid RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC16F1825T-I/ML | 功能描述:8位微控制器 -MCU 14KB FL 1KBRAM 32MHz 12I/0 Enhanced Mid RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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