参数资料
型号: PIC16LF72-I/ML
厂商: Microchip Technology
文件页数: 12/136页
文件大小: 0K
描述: IC PIC MCU FLASH 2KX14 28QFN
产品培训模块: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
标准包装: 61
系列: PIC® 16F
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
连通性: I²C,SPI
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 22
程序存储器容量: 3.5KB(2K x 14)
程序存储器类型: 闪存
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
数据转换器: A/D 5x8b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 28-VQFN 裸露焊盘
包装: 管件
产品目录页面: 639 (CN2011-ZH PDF)
109
2535J–AVR–08/10
ATtiny13
The minimum period for the Serial Clock Input (SCI) during High-voltage Serial Programming is
220 ns.
17.7.1
High-Voltage Serial Programming Algorithm
To program and verify the ATtiny13 in the High-voltage Serial Programming mode, the following
sequence is recommended (See instruction formats in Table 17-13 on page 110):
The following algorithm puts the device in High-voltage Serial Programming mode:
1. Set Prog_enable pins listed in Table 17-11 to “000”, RESET pin to “0” and Vcc to 0V.
2. Apply 4.5 - 5.5V between VCC and GND. Ensure that Vcc reaches at least 1.8V within
the next 20s.
3. Wait 20 - 60s, and apply 11.5 - 12.5V to RESET.
4. Keep the Prog_enable pins unchanged for at least 10s after the High-voltage has
been applied to ensure the Prog_enable Signature has been latched.
5. Release the Prog_enable[2] pin to avoid drive contention on the Prog_enable[2]/SDO
pin.
6. Wait at least 300s before giving any serial instructions on SDI/SII.
7. Exit Programming mode by power the device down or by bringing RESET pin to 0V.
If the rise time of the Vcc is unable to fulfill the requirements listed above, the following alterna-
tive algorithm can be used.
1. Set Prog_enable pins listed in Table 17-11 to “000”, RESET pin to “0” and Vcc to 0V.
2. Apply 4.5 - 5.5V between VCC and GND.
3. Monitor Vcc, and as soon as Vcc reaches 0.9 - 1.1V, apply 11.5 - 12.5V to RESET.
4. Keep the Prog_enable pins unchanged for at least 10s after theHigh-voltage has been
applied to ensure the Prog_enable Signature has been latched.
5. Release the Prog_enable[2] pin to avoid drive contention on the Prog_enable[2]/SDO
pin.
Table 17-10. Pin Name Mapping
Signal Name in High-voltage
Serial Programming Mode
Pin Name
I/O
Function
SDI
PB0
I
Serial Data Input
SII
PB1
I
Serial Instruction Input
SDO
PB2
O
Serial Data Output
SCI
PB3
I
Serial Clock Input (min. 220ns period)
Table 17-11. Pin Values Used to Enter Programming Mode
Pin
Symbol
Value
SDI
Prog_enable[0]
0
SII
Prog_enable[1]
0
SDO
Prog_enable[2]
0
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