您的位置：维库电子市场网 > Datasheet > ST10F269-T3

ST10F269-T3 Datasheet

  • ST10F269-T3

  • 16-BIT MCU WITH MAC UNIT, 256K BYTE FLASH MEMORY AND 12K BYT...

  • 1513.42KB

  • 160页

  • STMICROELECTRONICS   STMICROELECTRONICS

阅览下载 纠错 0

扫码查看芯片数据手册

上传产品规格书

PDF预览

ST10F269-T3
8 - INTERRUPT SYSTEM
The interrupt response time for internal program
execution is from 156.25ns to 375ns at 32MHz
CPU clock.
The ST10F269-T6 architecture supports several
mechanisms for fast and flexible response to
service requests that can be generated from
various sources (internal or external) to the
microcontroller. Any of these interrupt requests
can be serviced by the Interrupt Controller or by
the Peripheral Event Controller (PEC).
In contrast to a standard interrupt service where
the current program execution is suspended and a
branch to the interrupt vector table is performed,
just one cycle is 鈥榮tolen鈥?from the current CPU
activity to perform a PEC service. A PEC service
implies a single Byte or Word data transfer
between any two memory locations with an
additional increment of either the PEC source or
destination pointer. An individual PEC transfer
counter is implicitly decremented for each PEC
service except when performing in the continuous
transfer mode. When this counter reaches zero, a
standard interrupt is performed to the
corresponding source related vector location.
PEC services are very well suited to perform the
transmission or the reception of blocks of data.
The ST10F269-T3 has 8 PEC channels, each of
them offers such fast interrupt-driven data transfer
capabilities.
EXISEL (F1DAh / EDh)
15
14
13
12
11
10
9
An interrupt control register which contains an
interrupt request flag, an interrupt enable flag and
an interrupt priority bit-field is dedicated to each
existing interrupt source. Thanks to its related
register, each source can be programmed to one
of sixteen interrupt priority levels. Once starting to
be processed by the CPU, an interrupt service
can only be interrupted by a higher prioritized
service request. For the standard interrupt
processing, each of the possible interrupt sources
has a dedicated vector location.
Software interrupts are supported by means of the
鈥楾RAP鈥?instruction in combination with an
individual trap (interrupt) number.
8.1 - External Interrupts
Fast external interrupt inputs are provided to
service external interrupts with high precision
requirements. These fast interrupt inputs feature
programmable edge detection (rising edge, falling
edge or both edges).
Fast external interrupts may also have interrupt
sources selected from other peripherals; for
example the CANx controller receive signal
(CANx_RxD) can be used to interrupt the system.
This new function is controlled using the 鈥楨xternal
Interrupt Source Selection鈥?register EXISEL.
Reset Value: 0000h
6
5
4
3
2
1
0
ESFR
8
7
EXI7SS
RW
EXI6SS
RW
EXI5SS
RW
EXI4SS
RW
EXI3SS
RW
EXI2SS
RW
EXI1SS
RW
EXI0SS
RW
EXIxSS
External Interrupt x Source Selection (x=7...0)
鈥?0鈥? Input from associated Port 2 pin.
鈥?1鈥? Input from 鈥渁lternate source鈥?
鈥?0鈥? Input from Port 2 pin ORed with 鈥渁lternate source鈥?
鈥?1鈥? Input from Port 2 pin ANDed with 鈥渁lternate source鈥?
EXIxSS
0
1
2
3
4...7
Port 2 pin
P2.8
P2.9
P2.10
P2.11
P2.12...15
Alternate Source
CAN1_RxD
CAN2_RxD
RTCSI (Timed)
RTCAI (Alarm)
Not used (zero)
44/160

ST10F269-T3相关型号PDF文件下载

您可能感兴趣的PDF文件资料

热门IC型号推荐

©2024 维库电子市场网（www.dzsc.com）　备案号：浙B2-20050339-1 经营许可证：浙B2-20210386版权声明
买家服务热线：0571-85317607 | 买家服务部QQ： QQ:1609526468
卖家服务热线：0571-85317607 | 卖家服务部QQ： QQ:331652727

扫码下载APP，
一键连接广大的电子世界。

在线人工客服

买家服务：
卖家服务：

0571-85317607

客服在线时间周一至周五
9:00-17:30

关注官方微信号，
第一时间获取资讯。

建议反馈
返回顶部

建议反馈

联系人：

联系方式：

按住滑块，拖拽到最右边
>>
感谢您向阿库提出的宝贵意见，您的参与是维库提升服务的动力！意见一经采纳，将有感恩红包奉上哦！

PDF纠错X

投诉电话：0571-85317607 投诉QQ：

如选匿名将无法为您反馈投诉结果，建议实名投诉！