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W921E400A

Features: Operating Voltage· 2.8 to 5.5V operating voltage for W921E400A EPROM TYPE· 2.4 to 5.5V operating voltage for W921C400 MASK ROM TYPEOperating Frequency· Crystal or RC for main system clock:- Crystal for 400K, 800K, 2M, 3.58M, 4 MHz- RC up to 4 MHzMemory· 4K × 10-bit ROM (super EPROM):· 51...

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SeekIC No. : 004545310 Detail

W921E400A: Features: Operating Voltage· 2.8 to 5.5V operating voltage for W921E400A EPROM TYPE· 2.4 to 5.5V operating voltage for W921C400 MASK ROM TYPEOperating Frequency· Crystal or RC for main system clock:...

W921E400A Data Sheet

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Part Number:
W921E400A
Supply Ability:
5000

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

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Product Details

Description



Features:

Operating Voltage
· 2.8 to 5.5V operating voltage for W921E400A EPROM TYPE
· 2.4 to 5.5V operating voltage for W921C400 MASK ROM TYPE
Operating Frequency
· Crystal or RC for main system clock:
- Crystal for 400K, 800K, 2M, 3.58M, 4 MHz
- RC up to 4 MHz
Memory
· 4K × 10-bit ROM (super EPROM):
· 512× 4-bit RAM:
- 64 ×4-bit special register
- 16 × 4-bit working register
- 128×4-bit general register
- 304× 4-bit multi-purpose register
Stack
· 8-bit stack pointer
I/O Pins
· 13 bidirectional and individually controllable I/O lines:
- P2 Port: P2.0 to P2.1 large sink current pins and open drain option
- P3 Port: P3.0 to P3.3 multi-function I/O
- P4 Port: P4.2 to P4.3 open drain and pull high resistor option, multi-function I/O
- P5 Port: P5.1 multi-function I/O
- P6 Port: P6.0 to P6.3 open drain and pull high resistor option, multi-function I/O
· 8 bidirectional I/O lines:
- PA Port: PA.0 to PA.3 open drain and pull high resistor option
- PB Port: PB.0 to PB.3 open drain and pull high resistor option


Pinout

Connection Diagram


Specifications

PARAMETER
SYMBOL
RATING
UNIT
DC Supply Voltage
VDD-VSS
-0.3 to +7.0
V
Input/Output Voltage
VIL
VSS -0.3
V
VIH
VDD +0.3
V
VOL
VSS -0.3
V
VOH
VDD +0.3
V
Power Dissipation
PD
120
mW
Operation Temperature
TOPR
-20 to +70
°C
Storage Temperature
TSTG
-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 W921E400A/W921C400 is a single-chip CMOS 4-bit microcontroller that is a subset of W921E880A/W921C880. It features a 4-bit ALU, three multi-function timers, one channel DTMF generator, a beep tone generator, a serial I/O port and built in four by one channel comparator circuit, thus it can be easily implemented as telephone processor. Using the serial transmit/receive function, the W921E400A/W921C400 series can interface with Winbond LCD driver IC by the serial control circuit. There are also seven interrupt sources and 48-level subroutine nesting for interrupt applications.

The W921E400A/W921C400 have two power reduction modes, hold mode and stop mode, which help to minimize power dissipation. W921E400A/W921C400 are a powerful microcontroller for telephone processor, remote controllers, multiple I/O products, keyboard controllers, speech synthesis LSI controllers, and other products with few components.




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