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W921E880A

Features: Memory· ROM (Super EPROM): 8K× 10 bits· RAM: 1536 ×4 bits- 64 × 4 bit Special registers- 16 ×4 bit Working registers- 128× 4 bit General registers- 304 ×4 bit Multi-purpose registers4 bit serial buffer registers- 512 ×4-bit× 2 banksDual-clock Operation· Crystal or RC for the main system ...

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SeekIC No. : 004545312 Detail

W921E880A: Features: Memory· ROM (Super EPROM): 8K× 10 bits· RAM: 1536 ×4 bits- 64 × 4 bit Special registers- 16 ×4 bit Working registers- 128× 4 bit General registers- 304 ×4 bit Multi-purpose registers4 bit ...

W921E880A Data Sheet

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Part Number:
W921E880A
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/21

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Product Details

Description



Features:

Memory
· ROM (Super EPROM): 8K× 10 bits
· RAM: 1536 ×4 bits
- 64 × 4 bit Special registers
- 16 ×4 bit Working registers
- 128× 4 bit General registers
- 304 ×4 bit Multi-purpose registers4 bit serial buffer registers
- 512 ×4-bit× 2 banks
Dual-clock Operation
· Crystal or RC for the main system clock: RC up to 4 MHz
Crystal for 400 K, 800 K, 2 M, 3.58 M, 4 MHz
· Crystal for subsystem clock: 32.768 KHz
I/O Pins
· 32 bidirectional and individually controllable I/O lines:
- P0 Port: P0.0-P0.3 large drive current Pins
- P1 Port: P1.0-P1.3 large drive current Pins
- P2 Port: P2.0-P2.3 large sink current pins and open drain option
- P3 Port: P3.0-P3.3 multi-function I/O
- P4 Port: P4.0-P4.3 open drain and pull high resistor option, multi-function I/O
- P5 Port: P5.0-P5.3 multi-function I/O
- P6 Port: P6.0-P6.3 open drain and pull high resistor option, multi-function I/O
- P7 Port: P7.0-P7.3 large sink current pins and open drain option
· 32 bidirectional I/O lines:
- P8 Port: P8.0-P8.3 large drive current pins
- P9 Port: P9.0-P9.3 large sink current pins and open drain option
- PA Port: PA.0-PA.3 open drain and pull high resistor option
- PB Port: PB.0-PB.3 open drain and pull high resistor option
- PC Port: PC.1-PC.3 open drain and pull high resistor option
- PD Port: PD.0-PD.3 open drain and pull high resistor option
- PE Port: PE.0-PE.3
- PF Port: PF.0-PF.3
Interrupt
· Four External sources: INT0 ( P4.3 )
P4 Port ( P4.0-P4.2 )
· Six Internal sources: Timer 0
Timer 1
Timer 2
Timer 3
Comparator
Serial Port
Timer/Counter
· Timer 0: 2-19 order divider (double source)
Auto-reload timer
Watch-dog timer
· Timer 1: 2-19 order divider
Auto-reload timer
Arbitrary waveform generator
External event counter
· Timer 2: 2-19 order divider
Auto-reload timer
Arbitrary waveform generator
Period/Pulse width measurement function
· Timer 3: 2-19 order divider
Auto-reload timer
Operating Mode (System Clock)
· Normal mode: System clock operating
· HOLD mode: no operation except for oscillator (System clock stops only)
· STOP mode: no operation including oscillator
DTMF Generator and 8-bit D/A Converter
· One Channel DTMF Generator
· One Channel 8-bit D/A Converter
Voltage Comparator
· Four by one Channel Voltage Comparator
Serial I/O Interface
· Clock Synchronous multi-nibbles Serial Transmitter/Receiver Interface
Stack
· 8-bit Stack Pointer
Address Mode
· ROM:Indirect call addressing mode
Long jump/call addressing mode
· RAM: Direct addressing mode
Indirect addressing mode
Working reg. addressing mode
· Look-up table addressing mode
Instruction Sets
· 117 Instruction sets
Operating Voltage
· 2.8 to 5.5V operating voltage for W921E880A EPROM Type
· 2.4 to 5.5V operating voltage for W921C880 Mask ROM Type
Package Type
· Packaged in 80-pin QFP


Pinout

Connection Diagram


Specifications

PARAMETER
RATING
UNITS
Supply Voltage to Ground Potential
-0.3 to +7.0
V
Applied input/output Voltage
-0.3 to +7.0
V
Power Dissipation
120
mA
Ambient Operating Temperature
0 to +70
°C
Storage Temperature
-55 to 150
°C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.


Description

The W921E880A/W921C880 are 4-bit micro-processor fabricated by CMOS process. With a single channel DTMF generator, an 8-bit D/A converter circuit, a built in four by one channel comparator circuit and four multi-function timers. The excellent memory structure, 8K super EPROM in W921E880A and 8K mask ROM in W921C880 for program code and 1536 x 4 bit RAM minimize the need for external memory devices. The W921E880A/W921C880 provides good solution for consumming application, especially for telecommunication design with few external components.

Using the serial transmit/receive function, the W921E880A/W921C880 can interface with the Winbond LCD driver IC using the serial control circuit.




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