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参数资料
| 型号： | ST72F611F1M1 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO20 |
| 封装： | 0.300 INCH, PLASTIC, SOIC-20 |
| 文件页数： | 4/71页 |
| 文件大小： | 403K |
| 代理商： | ST72F611F1M1 |
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ST7261
12/71
FLASH PROGRAM MEMORY (Cont’d)
3.5 ICP (In-Circuit Programming)
To perform ICP the microcontroller must be
switched to ICC (In-Circuit Communication) mode
by an external controller or programming tool.
Depending on the ICP code downloaded in RAM,
Flash memory programming can be fully custom-
ized (number of bytes to program, program loca-
tions, or selection serial communication interface
for downloading).
When using an STMicroelectronics or third-party
programming tool that supports ICP and the spe-
cific microcontroller device, the user needs only to
implement the ICP hardware interface on the ap-
plication board (see Figure 7). For more details on
the pin locations, refer to the device pinout de-
scription.
ICP needs five signals to be connected to the pro-
gramming tool. These signals are:
– RESET: device reset
–VSS: device power supply ground
– ICCCLK: ICC output serial clock pin
– ICCDATA: ICC input serial data pin
–VPP: programming voltage
When the device is not yet configured to support
the application clock source (option byte not yet
programmed) or if the option bytes have to be pro-
grammed using ICP, one more pin has to be con-
nected:
– OSCIN: main clock input for external source
When the device is not supplied (VDD) by the ap-
plication, one more pin has to be connected:
–VDD: main power supply
CAUTIONS:
1. If RESET, ICCCLK or ICCDATA pins are used
for other purposes in the application, a serial resis-
tor has to be implemented to avoid a conflict in
case one of the other devices forces the signal lev-
el.
2. As soon as the external controller is plugged to
the board, even if an ICC session is not in
progress, the ICCCLK and ICCDATA pins are not
available for the application.
Note: To develop a custom programming tool, re-
fer to the ST7 FLASH Programming and ICC Ref-
erence Manual which gives full details on the ICC
protocol hardware and software.
Figure 7. Typical ICP Interface
ICP PROGRAMMING TOOL CONNECTOR
10k
CL2
CL1
1
ICCDATA
ICCCLK
RESET
VSS
VDD
VPP
OSCIN
OSCOUT
ST7
HE10 CONNECTOR TYPE
APPLICATI ON
4.7k
TO
TH
E
AP
P
LICA
TION
BOARD
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