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| 型號(hào)： | COP8CBR9HLQ8 |
| 廠(chǎng)商： | National Semiconductor |
| 文件頁(yè)數(shù)： | 91/111頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU CMOS 8BIT 44LLP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | COP8™ 8C |
| 核心處理器： | COP8 |
| 芯體尺寸： | 8-位 |
| 速度： | 20MHz |
| 連通性： | Microwire/Plus（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)： | 37 |
| 程序存儲(chǔ)器容量： | 32KB（32K x 8） |
| 程序存儲(chǔ)器類(lèi)型： | 閃存 |
| RAM 容量： | 1K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 16x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 44-WFQFN 裸露焊盤(pán) |
| 包裝： | 剪切帶 (CT) |
| 其它名稱(chēng)： | *COP8CBR9HLQ8 COP8CBR9HLQ8CT |
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SNOS535I – OCTOBER 2000 – REVISED MARCH 2013
5.15.4.2.1 Programming Example: External Interrupt
PSW
=00EF
CNTRL
=00EE
RBIT
0,PORTGC
RBIT
0,PORTGD
; G0 pin configured Hi-Z
SBIT
IEDG, CNTRL
; Ext interrupt polarity; falling edge
SBIT
GIE, PSW
; Set the GIE bit
SBIT
EXEN, PSW
; Enable the external interrupt
WAIT:
JP
WAIT
; Wait for external interrupt
.
.=0FF
; The interrupt causes a
VIS
; branch to address 0FF
; The VIS causes a branch to
; interrupt vector table
.
.=01FA
; Vector table (within 256 byte
.ADDRW SERVICE
; of VIS inst.) containing the ext
; interrupt service routine
.
SERVICE:
; Interrupt Service Routine
RBIT,EXPND,PSW
; Reset ext interrupt pend. bit
.
RET I
; Return, set the GIE bit
5.15.5 PORT L INTERRUPTS
Port L provides the user with an additional eight fully selectable, edge sensitive interrupts which are all
vectored into the same service subroutine.
The interrupt from Port L shares logic with the wake-up circuitry. The register WKEN allows interrupts from
Port L to be individually enabled or disabled. The register WKEDG specifies the trigger condition to be
either a positive or a negative edge. Finally, the register WKPND latches in the pending trigger conditions.
The GIE (Global Interrupt Enable) bit enables the interrupt function.
A control flag, LPEN, functions as a global interrupt enable for Port L interrupts. Setting the LPEN flag will
enable interrupts and vice versa. A separate global pending flag is not needed since the register WKPND
is adequate.
Since Port L is also used for waking the device out of the HALT or IDLE modes, the user can elect to exit
the HALT or IDLE modes either with or without the interrupt enabled. If he elects to disable the interrupt,
then the device will restart execution from the instruction immediately following the instruction that placed
the microcontroller in the HALT or IDLE modes. In the other case, the device will first execute the interrupt
service routine and then revert to normal operation. (See HALT MODE for clock option wake-up
information.)
5.15.6 INTERRUPT SUMMARY
The device uses the following types of interrupts, listed below in order of priority:
1. The Software Trap non-maskable interrupt, triggered by the INTR (00 opcode) instruction. The
Software Trap is acknowledged immediately. This interrupt service routine can be interrupted only by
another Software Trap. The Software Trap should end with two RPND instructions followed by a re-
start procedure.
2. Maskable interrupts, triggered by an on-chip peripheral block or an external device connected to the
device. Under ordinary conditions, a maskable interrupt will not interrupt any other interrupt routine in
progress. A maskable interrupt routine in progress can be interrupted by the non-maskable interrupt
request. A maskable interrupt routine should end with an RETI instruction or, prior to restoring context,
80
Functional Description
Copyright 2000–2013, Texas Instruments Incorporated
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| COP8CBR9HVA8 | 功能描述:8位微控制器 -MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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