參數(shù)資料
型號: R5F56218BDLE#U0
廠商: Renesas Electronics America
文件頁數(shù): 47/148頁
文件大小: 0K
描述: MCU 32BIT FLASH 512KROM 145TFLGA
產(chǎn)品培訓模塊: RX Compare Match Timer
RX DMAC
標準包裝: 1
系列: RX600
核心處理器: RX
芯體尺寸: 32-位
速度: 100MHz
連通性: CAN,EBI/EMI,I²C,SCI,SPI,USB
外圍設(shè)備: DMA,LVD,POR,PWM,WDT
輸入/輸出數(shù): 103
程序存儲器容量: 512KB(512K x 8)
程序存儲器類型: 閃存
RAM 容量: 96K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10/12b,D/A 2x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 145-TFLGA
包裝: 托盤
2004 Microchip Technology Inc.
DS39609B-page 139
PIC18F6520/8520/6620/8620/6720/8720
EXAMPLE 12-1:
IMPLEMENTING A REAL-TIME CLOCK USING A TIMER1 INTERRUPT SERVICE
TABLE 12-2:
REGISTERS ASSOCIATED WITH TIMER1 AS A TIMER/COUNTER
RTCinit
MOVLW
0x80
; Preload TMR1 register pair
MOVWF
TMR1H
; for 1 second overflow
CLRF
TMR1L
MOVLW
b’00001111’
; Configure for external clock,
MOVWF
T1OSC
; Asynchronous operation, external oscillator
CLRF
secs
; Initialize timekeeping registers
CLRF
mins
;
MOVLW
.12
MOVWF
hours
BSF
PIE1, TMR1IE
; Enable Timer1 interrupt
RETURN
RTCisr
BSF
TMR1H, 7
; Preload for 1 sec overflow
BCF
PIR1, TMR1IF
; Clear interrupt flag
INCF
secs, F
; Increment seconds
MOVLW
.59
; 60 seconds elapsed?
CPFSGT
secs
RETURN
; No, done
CLRF
secs
; Clear seconds
INCF
mins, F
; Increment minutes
MOVLW
.59
; 60 minutes elapsed?
CPFSGT
mins
RETURN
; No, done
CLRF
mins
; clear minutes
INCF
hours, F
; Increment hours
MOVLW
.23
; 24 hours elapsed?
CPFSGT
hours
RETURN
; No, done
MOVLW
.01
; Reset hours to 1
MOVWF
hours
RETURN
; Done
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on
all other
Resets
INTCON
GIE/GIEH PEIE/GIEL
TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
0000 0000 0000 0000
PIR1
PSPIF
ADIF
RCIF
TXIF
SSPIF
CCP1IF
TMR2IF
TMR1IF
0000 0000 0000 0000
PIE1
PSPIE
ADIE
RCIE
TXIE
SSPIE
CCP1IE
TMR2IE
TMR1IE
0000 0000 0000 0000
IPR1
PSPIP
ADIP
RCIP
TXIP
SSPIP
CCP1IP
TMR2IP
TMR1IP
0111 1111 0111 1111
TMR1L
Holding Register for the Least Significant Byte of the 16-bit TMR1 Register
xxxx xxxx uuuu uuuu
TMR1H
Holding Register for the Most Significant Byte of the 16-bit TMR1 Register
xxxx xxxx uuuu uuuu
T1CON
RD16
T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON 0-00 0000 u-uu uuuu
Legend:
x
= unknown, u = unchanged, – = unimplemented, read as ‘0’. Shaded cells are not used by the Timer1 module.
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