W78EA054APG, W78ERD2A, W78ERD2A40DN Selling Leads, Datasheet
MFG:WINBOND Package Cooled:ORG PACKING D/C:08+
W78EA054APG, W78ERD2A, W78ERD2A40DN Datasheet download
Part Number: W78EA054APG
MFG: WINBOND
Package Cooled: ORG PACKING
D/C: 08+
W78EA054APG, W78ERD2A, W78ERD2A40DN
- Table of contents:
Info of W78EA054APG
Info of W78ERD2A
Info of W78ERD2A40DN
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About W78151
PDF/DataSheet Download
Datasheet: W78151
File Size: 262244 KB
Manufacturer: Winbond
Download : Click here to Download
About W78151
PDF/DataSheet Download
Datasheet: W78151
File Size: 262244 KB
Manufacturer: Winbond
Download : Click here to Download
About W78151
PDF/DataSheet Download
Datasheet: W78151
File Size: 262244 KB
Manufacturer: Winbond
Download : Click here to Download
W78ERD2A General Description
The W78ERD2 is an 8-bit microcontroller which is pin- and instruction-set-compatible with the standard 80C52. The W78ERD2 contains a 64-KB Flash EPROM whose contents may be updated insystem by a loader program stored in an auxiliary, 4-KB Flash EPROM. Once the contents are confirmed, it can be protected for security.
The W78ERD2 also contains 256 bytes of on-chip RAM; 1 KB of auxiliary RAM; four 8-bit, bidirectional and bit-addressable I/O ports; an additional 4-bit port P4; three 16-bit timer/counters; and a serial port. These peripherals are all supported by nine interrupt sources with 4 levels of priority.
The W78ERD2 has two power-reduction modes: idle mode and power-down mode, both of which are software-selectable. Idle mode turns off the processor clock but allows peripherals to continue operating, while power-down mode stops the crystal oscillator for minimum power consumption. Power-down mode can be activated at any time and in any state without affecting the processor.
W78ERD2A Maximum Ratings
| PARAMETER | SYMBOL | MIN. | MAX. | UNIT |
| DC Power Supply | VDD − VSS | -0.3 | +6.0 | V |
| Input Voltage | VIN | VSS -0.3 | VDD +0.3 | V |
| Operating Temperature | TA | 0 | 70 | |
| Storage Temperature | TST | -55 | +150 |
W78ERD2A Features
• 8-bit CMOS microcontroller
• Pin-compatible with standard 80C52
• Instruction-set compatible with 80C52
• Four 8-bit I/O ports; Port 0 has internal pull-up resisters enabled by software.
• One extra 4-bit I/O port with interrupt and chip-select functions
• Three 16-bit timers
• Programmable clock out
• Programmable Counter Array (PCA) with PWM, Capture, Compare and Watchdog functions
• 9 interrupt sources with 4 levels of priority
• Full-duplex serial port with framing-error detection and automatic address recognition
• 64-KB, in-system-programmable, Flash EPROM (AP Flash EPRAOM)
• 4-KB auxiliary Flash EPROM for loader program (LD Flash EPROM)
• 256-byte on-chip RAM
• 1-KB auxiliary RAM, software-selectable
• Software Reset
• 12 clocks per machine cycle operation (default). Speed up to 40 MHz.
• 6 clocks per machine cycle operation set by the writer. Speed up to 20 MHz.
• 2 DPTR registers
• Low EMI (inhibit ALE)
• Built-in power management with idle mode and power down mode
• Code protection
• Packages:
- Lead Free (RoHS) DIP 40: W78ERD2A40DL
- Lead Free (RoHS) PLCC 44: W78ERD2A40PL
- Lead Free (RoHS) PQFP 44: W78ERD2A40FL
• Pin-compatible with standard 80C52
• Instruction-set compatible with 80C52
• Four 8-bit I/O ports; Port 0 has internal pull-up resisters enabled by software.
• One extra 4-bit I/O port with interrupt and chip-select functions
• Three 16-bit timers
• Programmable clock out
• Programmable Counter Array (PCA) with PWM, Capture, Compare and Watchdog functions
• 9 interrupt sources with 4 levels of priority
• Full-duplex serial port with framing-error detection and automatic address recognition
• 64-KB, in-system-programmable, Flash EPROM (AP Flash EPRAOM)
• 4-KB auxiliary Flash EPROM for loader program (LD Flash EPROM)
• 256-byte on-chip RAM
• 1-KB auxiliary RAM, software-selectable
• Software Reset
• 12 clocks per machine cycle operation (default). Speed up to 40 MHz.
• 6 clocks per machine cycle operation set by the writer. Speed up to 20 MHz.
• 2 DPTR registers
• Low EMI (inhibit ALE)
• Built-in power management with idle mode and power down mode
• Code protection
• Packages:
- Lead Free (RoHS) DIP 40: W78ERD2A40DL
- Lead Free (RoHS) PLCC 44: W78ERD2A40PL
- Lead Free (RoHS) PQFP 44: W78ERD2A40FL
W78ERD2A Connection Diagram
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