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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： 118/160页
文件大小： 974K
代理商： ST72F652R4T1
ST7265
60/160
Data Transfer Coprocessor (Cont’d)
11.2.7 Interrupts
Note: The DTC interrupt events are connected to
the same interrupt vector (see Interrupts chapter).
They generate an interrupt if the corresponding
Enable Control Bit is set and the I-bit in the CC
register is reset (RIM instruction).
11.2.8 Register Description
DTC CONTROL REGISTER (DTCCR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:5 = Reserved. Must be left at reset value.
Bit 4 = ERREN
Error Interrupt Enable
This bit is set and cleared by software.
0: Error interrupt disabled
1: Error interrupt enabled
Bit 3 = STOPEN
Stop Interrupt Enable
This bit is set and cleared by software.
0: Stop interrupt disabled
1: Stop interrupt enabled
Bit 2 = LOAD
Load Enable
This bit is set and cleared by software. It can only
be set while RUN=0.
0: Write access to DTC RAM disabled
1: Write access DTC RAM enabled
Bit 1 = INIT
Initialization
This bit is set and cleared by software.
0: Do not copy DTCPR to DTC
1: Copy the DTCPR pointer to DTC
Bit 0 = RUN
START/STOP Control
This bit is set and cleared by software. It can only
be set while LOAD=0. It is also cleared by hard-
ware when STOP=1
0: Stop DTC
1: Start DTC
DTC STATUS REGISTER (DTCSR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:2 = Reserved. Forced by hardware to 0.
Bit 1 = ERROR
Error Flag
This bit is set by hardware and cleared by software
reading this register.
0: No Error event occurred
1: Error event occurred (DTC is running)
Bit 0 = STOP
Stop Flag
This bit is set by hardware and cleared by software
reading this register.
0: No Stop event occurred
1: Stop event occurred (DTC terminated execution
at the current intruction)
DTC POINTER REGISTER (DTCPR)
Write Only
Reset Value: 0000 0000 (00h)
Bit 7:0 = PC[7:0]
Pointer Register.
This register is written by software. It gives the ad-
dress of an entry point in the protocol software that
has previously been loaded in the DTC RAM.
Note: To start executing the function, after writing
this address, set the INIT bit.
Interrupt Event
Event
Flag
Enable
Control
Bit
Exit
from
Wait
Exit
from
Halt
Error
ERROR
ERREN
Yes
No
Stop
STOP
STOPEN
Yes
No
70
000
ERR
EN
STOP
EN
LOAD
INIT
RUN
70
000000
ERROR
STOP
70
MSB
LSB
1
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