参数资料
型号: ST10F269Z2Q3
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP144
封装: 28 X 28 MM, PLASTIC, QFP-144
文件页数: 6/160页
文件大小: 1541K
代理商: ST10F269Z2Q3
ST10F269
103/160
16.1.5 - RTCAH & RTCAL: RTC ALARM Registers
When the programmable counters reach the 32-bit value stored into RTCAH & RTCAL registers, an alarm
is triggered and the interrupt request RTAIR is generated. Those registers are not protected.
RTCAL (EC12h)
XBUS
Reset Value: XXXXh
RTCAH (EC14h)
XBUS
Reset Value: XXXXh
Note: Those registers are not reset
16.2 - Programming the RTC
RTC interrupt request signals are connected to Port2, pad 10 (RTCSI) and pad 11 (RTCAI). An alternate
function Port2 is to generate fast interrupts firq[7:0]. To trigger firq[2] and firq[3] the following configuration
has to be set.
EXICON ESFR controls the external interrupt edge selection, RTC interrupt requests are rising edge
active.
EXICON (F1C0h)
ESFR
Reset Value: 0000h
Notes: 1. EXI2ES and EXI3ES must be configured as "01b" because RCT interrupt request lines are rising edge active.
2. Alarm interrupt request line (RTCAI) is linked with EXI3ES.
3. Timed interrupt request line (RTCSI) is linked with EXI2ES.
EXISEL ESFR enables the Port2 alternate sources. RTC interrupts are alternate sources 2 and 3.
EXISEL (F1DAh)
ESFR
Reset Value: 0000h
Notes: 1. Advised configuration.
2. Alarm interrupt request (RTCAI) is linked with EXI3SS.
3. Timed interrupt request (RTCSI) is linked with EXI2SS.
15
14
13
12
11
10
9876543210
RTCAL
RW
15
14
13
12
11
10
9876543210
RTCAH
RW
15
14
13
12
11
10
9876543210
EXI7ES
EXI6ES
EXI5ES
EXI4ES
EXI3ES 1 2
EXI2ES 1 3
EXI1ES
EXI0ES
RW
15
14
13
12
11
10
9876543210
EXI7SS
EXI6SS
EXI5SS
EXI4SS
EXI3SS 2
EXI2SS 3
EXI1SS
EXI0SS
RW
EXIxSS
External Interrupt x Source Selection (x=7...0)
‘00’: Input from associated Port 2 pin.
‘01’: Input from “alternate source”. 1
‘10’: Input from Port 2 pin ORed with “alternate source”. 1
‘11’: Input from Port 2 pin ANDed with “alternate source”.
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