Electronic Components Datasheet Search |
|
P83C453EBAA Datasheet(PDF) 4 Page - NXP Semiconductors |
|
P83C453EBAA Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 23 page Philips Semiconductors Preliminary specification 80C453/83C453/87C453 CMOS single-chip 8-bit microcontrollers 1996 Aug 15 3-314 PIN DESCRIPTION MNEMONIC PIN NO. TYPE NAME AND FUNCTION VSS 54 I Ground: 0V reference. VCC 18 I Power Supply: This is the power supply voltage for normal, idle, and power-down operation. P0.0–0.7 17-10 I/O Port 0: Port 0 is an open-drain, bidirectional I/O port. Port 0 is also the multiplexed data and low-order address bus during accesses to external memory. External pull-ups are required during program verification. Port 0 can sink/source eight LS TTL inputs. P1.0–P1.7 27-34 I/O Port 1: Port 1 is an 8-bit bidirectional I/O port with internal pull-ups. Port 1 receives the low-order address bytes during program memory verification. Port 1 can sink/source three LS TTL inputs, and drive CMOS inputs without external pull-ups. P2.0–P2.7 2-9 I/O Port 2: Port 2 is an 8-bit bidirectional I/O port with internal pull-ups. Port 2 emits the high-order address bytes during access to external memory and receives the high-order address bits and control signals during program verification. Port 2 can sink/source three LS TTL inputs, and drive CMOS inputs without external pull-ups. P3.0–P3.7 36-43 I/O Port 3: Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. Port 3 can sink/source three LS TTL inputs, and drive CMOS inputs without external pull-ups. Port 3 also serves the special functions listed below: 36 I RxD (P3.0): Serial input port 37 O TxD (P3.1): Serial output port 38 I INT0 (P3.2): External interrupt 39 I INT1 (P3.3): External interrupt 40 I T0 (P3.4): Timer 0 external input 41 I T1 (P3.5): Timer 1 external input 42 O WR (P3.6): External data memory write strobe 43 O RD (P3.7): External data memory read strobe P4.0–P4.3 P4.0–P4.7 26-19 I/O I/O Port 4: Port 4 is an 8-bit bidirectional I/O port with internal pull-ups. Port 4 can sink/source three LS TTL inputs and drive CMOS inputs without external pull-ups. P5.0–P5.7 44-51 I/O Port 5: Port 5 is an 8-bit bidirectional I/O port with internal pull-ups. Port 5 can sink/source three LS TTL inputs and drive CMOS inputs without external pull-ups. P6.0–P6.7 59-66 I/O Port 6: Port 6 is a specialized 8-bit bidirectional I/O port with internal pull-ups. This special port can sink/source three LS TTL inputs and drive CMOS inputs without external pull-ups. Port 6 can be used in a strobed or non-strobed mode of operation. Port 6 works in conjunction with four control pins that serve the functions listed below: ODS 55 I ODS: Output data strobe IDS 56 I IDS: Input data strobe BFLAG 57 I/O BFLAG: Bidirectional I/O pin with internal pull-ups AFLAG 58 I/O AFLAG: Bidirectional I/O pin with internal pull-ups RST 35 I Reset: A high on this pin for two machine cycles while the oscillator is running, resets the device. An internal pull-down resistor permits a power-on reset using only an external capacitor connected to VCC. ALE/PROG 68 I/O Address Latch Enable/Program Pulse: Output pulse for latching the low byte of the address during an access to external memory. ALE is activated at a constant rate of 1/6 the oscillator frequency except during an external data memory access, at which time one ALE is skipped. ALE can sink/source three LS TTL inputs and drive CMOS inputs without external pull-ups. This pin is also the program pulse during EPROM programming. PSEN 67 O Program Store Enable: The read strobe to external program memory. PSEN is activated twice each machine cycle during fetches from external program memory. However, when executing out of external program memory, two activations of PSEN are skipped during each access to external program memory. PSEN is not activated during fetches from internal program memory. PSEN can sink/source eight LS TTL inputs and drive CMOS inputs without an external pull-up. This pin should be tied low during programming. EA/VPP 1 I Instruction Execution Control/Programming Supply Voltage: When EA is held high, the CPU executes out of internal program memory, unless the program counter exceeds 1FFFH. When EA is held low, the CPU executes out of external program memory. EA must never be allowed to float. This pin also receives the 12.75V programming supply voltage (VPP) during EPROM programming. XTAL1 53 I Crystal 1: Input to the inverting oscillator amplifier that forms the oscillator. This input receives the external oscillator when an external oscillator is used. XTAL2 52 O Crystal 2: An output of the inverting amplifier that forms the oscillator. This pin should be floated when an external oscillator is used. |
Similar Part No. - P83C453EBAA |
|
Similar Description - P83C453EBAA |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |