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| 型號(hào)： | P83C591SFA |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | Single-chip 8-bit microcontroller with CAN controller |
| 中文描述： | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, SOT-187-2, LCC-44 |
| 文件頁(yè)數(shù)： | 115/161頁(yè) |
| 文件大?。?/td> | 588K |
| 代理商： | P83C591SFA |
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1999 Aug 19
115
Philips Semiconductors
Objective Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
16.1.2
T
IMER
T2 E
XTENSION
When a 6 MHz oscillator is used, a 16-bit overflow on
Timer T2 occurs every 65.5, 131, 262, or 524 ms,
depending on the prescaler division ratio; i.e., the
maximum cycle time is approximately 0.5 seconds. In
applications where cycle times are greater than 0.5
seconds, it is necessary to extend Timer T2. This is
achieved by selecting f
CLK
/6 as the clock source (set
T2MS0, reset T2MS1), setting the prescaler division ration
to
1
8
(set T2P0, set T2P1), disabling the byte overflow
interrupt (reset T2lS0) and enabling the 16-bit overflow
interrupt (set T2lS1). The following software routine is
written for a three-byte extension which gives a maximum
cycle time of approximately 2400 hours.
OVINT:
PUSH ACO
PUSH PSW
INC TlMEX1 ; increment first byte (low order) of
extended timer
MOV A,TlMEX1
JNZ INTEX
; jump to INTEX if; there is no
overflow
INC TlMEX2 ; increment second byte
MOV A,TlMEX2
JNZ INTEX
; jump to INTEX if there is no
overflow
INC TlMEX3 ; increment third byte (high order)
; save accumulator
; save status
INTEX:
CLR T2OV
POP PSW
POP ACC
RETI
; reset interrupt flag
; restore status
; restore accumulator
; return from interrupt
16.1.3
T
IMER
T2, C
APTURE AND
C
OMPARE
L
OGIC
Timer T2 is connected to four 16-bit capture registers and
three 16-bit compare registers. A capture register may be
used to capture the contents of Timer T2 when a transition
occurs on its corresponding input pin. A compare register
may be used to set or reset port 3 output pins at certain
pre-programmable time intervals. The combination of
Timer T2 and the capture and compare logic is very
powerful in applications involving rotating machinery,
automotive injection systems, etc. Timer T2 and the
capture and compare logic are shown in Figure 45.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P87C591SFA | Single-chip 8-bit microcontroller with CAN controller |
| P80C591SFB | Single-chip 8-bit microcontroller with CAN controller |
| P83C591SFB | Single-chip 8-bit microcontroller with CAN controller |
| P87C591SFB | Single-chip 8-bit microcontroller with CAN controller |
| P80C591 | Single-chip 8-bit microcontroller with CAN controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P83C591SFB | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Single-chip 8-bit microcontroller with CAN controller |
| P83C591VFA | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Single-chip 8-bit microcontroller with CAN controller |
| P83C591VFB | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Single-chip 8-bit microcontroller with CAN controller |
| P83C592 | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:8-bit microcontroller with on-chip CAN |
| P83C592FFA | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:8-bit microcontroller with on-chip CAN |
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