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參數資料
| 型號： | PCD3359A |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit microcontroller with DTMF generator and 128 bytes EEPROM |
| 中文描述： | 8位的DTMF產生器和128字節EEPROM的微控制器 |
| 文件頁數： | 18/32頁 |
| 文件大?。?/td> | 165K |
| 代理商： | PCD3359A |
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1998 May 11
18
Philips Semiconductors
Product specification
8-bit microcontroller with DTMF
generator and 128 bytes EEPROM
PCD3359A
8
INTERRUPTS
8.1
Derivative interrupt
One derivative interrupt event is defined. It is controlled by
bits T2F and ET2I in the EPCR (see Tables 11 and 12).
The derivative interrupt event occurs when T2F is set. This
request is honoured under the following circumstances:
No interrupt routine proceeds
No external interrupt request is pending
The derivative interrupt is enabled
ET2I is set.
The derivative interrupt routine must include instructions
that will remove the cause of the derivative interrupt by
explicitly clearing T2F. If the derivative interrupt is not
used, T2F may directly be tested by the program.
Obviously, T2F can also be asserted under program
control, e.g. to generate a software interrupt.
8.2
Port 0 Wake-up interrupts
In addition to the external interrupt CE, the PCD3359A
contain 8 level-sensitive external interrupt sources on
Port 0. This function generates an interrupt request if any
of the enabled lines of Port 0 (P0.0 to P0.7) is pulled LOW.
Like the external interrupt (and contrary to the derivative
interrupt) the Port 0 interrupt operates also in Stop mode
and forces the CPU to exit the Stop mode.
The Port 0 Wake-up interrupts are controlled by the
Enable Port 0 Interrupt bits EPI3 to EPI0 in the
Melody and Port Interrupt Control Register MDYCON.
Pairs of Port 0 interrupts are individually enabled/disabled
via bits 4, 5, 6 and 7. For details see Section 6.1.2. As the
Port 0 interrupt is directly linked to the external interrupt, it
uses the same flag (EIF), enable instructions (EN I, DIS I)
and interrupt vector.
A Port 0 Wake-up interrupt is serviced if:
No interrupt routine is in progress
The external interrupt is enabled
It’s corresponding enable bit in register MDYCON is set
to a logic 1.
If a Port 0 interrupt is to be used, the port flip-flop must first
be set to a logic 1 (set to input mode) before it’s
corresponding EPIn
bit is set.
If only a portion of the Port 0 interrupts are used, the
remaining port lines may still be used as normal I/O.
In order to configure an I/O as an input, a logic 1 must first
be written to it. If a logic 0 is written to one of these port
lines (e.g. ANL P0, 00H) while it’s corresponding interrupt
is enabled, a Port 0 interrupt will be generated.
For more details see data sheet “PCD33xxA Family;
Section External Interrupt”.
Fig.6 Simplified External/Port 0 interrupt structure.
handbook, halfpage
MGB825
P0.6
P0.7
EPI3
P0.4
P0.5
EPI2
P0.2
P0.3
EPI1
P0.0
P0.1
EPI0
to CE/T0 input of
Digital filter/latch of the
Interrup logic section
(2)
(1) From pin CE/T0.
(2) See the “PCD33XXA Family”data sheet.
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|---|---|
| PCD3359AH | 8-bit microcontroller with DTMF generator and 128 bytes EEPROM |
| PCD3359AP | 8-bit microcontroller with DTMF generator and 128 bytes EEPROM |
| PCD3359AT | 8-bit microcontroller with DTMF generator and 128 bytes EEPROM |
| PCD3360 | Programmable multi-tone telephone ringer |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCD3359AH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with DTMF generator and 128 bytes EEPROM |
| PCD3359AP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with DTMF generator and 128 bytes EEPROM |
| PCD3359AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with DTMF generator and 128 bytes EEPROM |
| PCD3360 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Programmable multi-tone telephone ringer |
| PCD3360P | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Programmable multi-tone telephone ringer |
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