参数资料
型号: ST72F652R4T1
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, PQFP64
封装: 14 X 14 MM, TQFP-64
文件页数: 76/160页
文件大小: 974K
代理商: ST72F652R4T1
ST7265
22/160
FLASH PROGRAM MEMORY (Cont’d)
4.5 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 11). For more details
on the pin locations, refer to the device pinout de-
scription.
ICP needs six pins to be connected to the pro-
gramming tool. These pins are:
– RESET: device reset
–VSS: device power supply ground
– ICCCLK: ICC output serial clock pin
– ICCDATA: ICC input serial data pin
– ICCSEL/VPP: programming voltage
–VDD: application board 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. If these pins are used as outputs in the applica-
tion, the serial resistors are not necessary.
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 Refer-
ence Manual which gives full details on the ICC
protocol hardware and software.
Figure 11. Typical ICP Interface
ICP PROGRAMMING TOOL CONNECTOR
10k
1
ICCDATA
ICCCLK
RESET
VSS
VDD
ICCSEL/VPP
ST7
HE10 CONNECTOR TYP E
APPLICATION
>2.7k
T
O
TH
E
APPL
IC
AT
ION
BOARD
APPLICATI ON
POWER SUPP LY
VDD CONNECTION LETS
PROGRAMMING TOOL CHECK THAT
MCU HAS POWER
OPTIONAL (SEE CAUT ION 1)
1
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