參數(shù)資料
型號(hào)： AT90S8515-8JC
廠商： Atmel
文件頁(yè)數(shù)： 32/112頁(yè)
文件大?。?/td> 0K
描述： IC MCU 8K FLSH 8MHZ 44PLCC
標(biāo)準(zhǔn)包裝： 27
系列： AVR® 90S
核心處理器： AVR
芯體尺寸： 8-位
速度： 8MHz
連通性： SPI，UART/USART
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 32
程序存儲(chǔ)器容量： 8KB（4K x 16）
程序存儲(chǔ)器類型： 閃存
EEPROM 大?。?/td> 512 x 8
RAM 容量： 512 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 6 V
振蕩器型： 內(nèi)部
工作溫度： 0°C ~ 70°C
封裝/外殼： 44-LCC（J 形引線）
包裝： 管件
26
AT90S8515
0841G–09/01
interrupt. Some of the interrupt flags can also be cleared by writing a logical “1” to the
flag bit position(s) to be cleared.
If an interrupt condition occurs when the corresponding interrupt enable bit is cleared
(zero), the interrupt flag will be set and remembered until the interrupt is enabled or the
flag is cleared by software.
If one or more interrupt conditions occur when the global interrupt enable bit is cleared
(zero), the corresponding interrupt flag(s) will be set and remembered until the global
interrupt enable bit is set (one) and will be executed by order of priority.
Note that external level interrupt does not have a flag and will only be remembered for
as long as the interrupt condition is active.
General Interrupt Mask
Register – GIMSK
Bit 7 – INT1: External Interrupt Request 1 Enable
When the INT1 bit is set (one) and the I-bit in the Status Register (SREG) is set (one),
the external pin interrupt is enabled. The Interrupt Sense Control1 bits 1/0 (ISC11 and
ISC10) in the MCU general Control Register (MCUCR) define whether the external
interrupt is activated on rising or falling edge of the INT1 pin or is level-sensed. Activity
on the pin will cause an interrupt request even if INT1 is configured as an output. The
corresponding interrupt of External Interrupt Request 1 is executed from program mem-
ory address $002. See also “External Interrupts”.
Bit 6 – INT0: External Interrupt Request 0 Enable
When the INT0 bit is set (one) and the I-bit in the Status Register (SREG) is set (one),
the external pin interrupt is enabled. The Interrupt Sense Control0 bits 1/0 (ISC01 and
ISC00) in the MCU general Control Register (MCUCR) define whether the external
interrupt is activated on rising or falling edge of the INT0 pin or is level-sensed. Activity
on the pin will cause an interrupt request even if INT0 is configured as an output. The
corresponding interrupt of External Interrupt Request 0 is executed from program mem-
ory address $001. See also “External Interrupts”.
Bits 5..0 – Res: Reserved Bits
These bits are reserved bits in the AT90S8515 and always read as zero.
General Interrupt Flag
Register – GIFR
Bit 7 – INTF1: External Interrupt Flag1
When an edge on the INT1 pin triggers an interrupt request, the corresponding interrupt
flag, INTF1 becomes set (one). If the I-bit in SREG and the corresponding interrupt
enable bit, INT1 in GIMSK is set (one), the MCU will jump to the interrupt vector. The
flag is cleared when the interrupt routine is executed. Alternatively, the flag can be
cleared by writing a logical “1” to it. This flag is always cleared when INT1 is configured
as level interrupt.
Bit
7
6
5
4
3
2
1
0
$3B ($5B)
INT1
INT0
–
GIMSK
Read/Write
R/W
R
Initial Value
0
Bit
7
6
5
4
3
2
1
0
$3A ($5A)
INTF1
INTF0
–
GIFR
Read/Write
R/W
R
Initial Value
0
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