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W79E633A 데이터시트 PDF : 부품 기능 및 핀배열

부품번호 W79E633A
기능 8-BIT MICROCONTROLLER
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W79E633A 데이터시트 및 W79E633A PDF

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W79E633A pdf, 반도체, 판매, 대치품
W79E633A/W79L633A
1. General Description
The W79E(L)633 is a fast, 8051/52-compatible microcontroller with a redesigned processor core that
eliminates wasted clock and memory cycles. Typically, the W79E(L)633 executes instructions 1.5 to 3
times faster than that of the traditional 8051/52, depending on the type of instruction, and the overall
performance is about 2.5 times better at the same crystal speed. As a result, with the fully-static
CMOS design, the W79E(L)633 can accomplish the same throughput with a lower clock speed,
reducing power consumption.
The W79E(L)633 provides 256 bytes of on-chip RAM; 1-KB of auxiliary RAM; four 8-bit, bi-directional
and bit-addressable I/O ports; an additional 4-bit port P4; three 16-bit timer/counters; an UART serial
port, 2 channels of I2C with master/slave capability and 4 channels of 10-bit ADC. These peripherals
are all supported by ten interrupt sources with 2 levels of priority.
The W79E(L)633 contains a 128-KB Flash EPROM whose contents may be updated in-system by a
loader program stored in an auxiliary, 4-KB Flash EPROM. Once the contents are confirmed, it can be
protected for security.
Note: If the applied VDD is not stable, especially with long transition time of power on/off, it’s
recommended to apply an external RESET IC to the RST pin for improving the stability of
system.
2. Features
Fully-static-design 8-bit Turbo 51 CMOS microcontroller up to 40MHz
128-KB of in-system-programmable Flash EPROM (AP Flash EPROM)
4-KB of Auxiliary Flash EPROM for the loader program (LD Flash EPROM)
1-KB auxiliary RAM, software-selectable, accessed by MOVX instruction
256 bytes of scratch-pad RAM
Four 8-bit bi-directional ports
All pins with Schmitt trigger inputs
One 4-bit multipurpose I/O port4 with Chips select(CS) and boot function
Three 16-bit timers
6 channel of 8-bit PWM
One enhanced full-duplex UART with framing-error detection and automatic address recognition
2-channels of I2C with master/slave capability
10-bit ADC with 4-channel inputs
Software programmable access cycle to external RAM/peripherals
10 interrupt sources with two levels of priority
Software reset function
Optional H/L state of ALE/PSEN during power down mode
Built-in power management
Code protection
Development tool
JTAG ICE(In Circuit Emulator) tool
Packages:
Lead Free(RoHS) PLCC 44:
Lead Free(RoHS) QFP 44:
W79E633A40PL, W79L633A25PL
W79E633A40FL, W79L633A25FL
-4-

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W79E633A 전자부품, 판매, 대치품
W79E633A/W79L633A
4. Pin Description
SYMBOL
EA
TYPE
I
DESCRIPTIONS
EXTERNAL ACCESS ENABLE: This pin forces the processor to execute
the external ROM. The ROM address and data are not presented on the bus
if the EA pin is high.
PSEN
ALE
RST
XTAL1
XTAL2
VSS
VDD
P0.0P0.7
P1.0P1.7
P2.0P2.7
OH
OH
IL
I
O
I
I
I/O
DSH
I/O
SH
I/O
SH
PROGRAM STORE ENABLE: PSEN enables the external ROM data in the
Port 0 address/data bus. When internal ROM access is performed, no PSEN
strobe signal outputs originate from this pin.
ADDRESS LATCH ENABLE: ALE enables the address latch that separates
the address from the data on Port 0.
RESET: Set this pin high for two machine cycles while the oscillator is
running to reset the device.
CRYSTAL 1: Crystal oscillator input or external clock input.
CRYSTAL 2: Crystal oscillator output.
GROUND: ground potential.
POWER SUPPLY: Supply voltage for operation.
PORT 0: 8-bit, bi-directional I/O port with internal pull-up resisters. This port
also provides a multiplexed, low-order address / data bus during accesses to
external memory.
PORT 1: 8-bit, bi-directional I/O port with internal pull-up resistors. This port
also provides alternate functions as below.
P1.0 ~ P1.5 provide PWM0 ~ PWM5.
P1.4 ~ P1.7 provide ADC0 ~ ADC3.
P1.0 alternately provides Timer2 external count input.(T2)
P1.1 alternately provides Timer2 Reload/Capture/Direction control.(T2Ex)
PORT 2: 8-bit, bi-directional I/O port with internal pull-ups. This port also
provides the upper address bits when accessing external memory. P2.4 to
P2.7 can be software configured as I2C serial ports
PORT 3: 8-bit, bi-directional I/O port with internal pull-up resistors.
All bits have alternate functions, which are described below:
RXD (P3.0): Serial Port 0 input
TXD (P3.1): Serial Port 0 output
P3.0P3.7
I/O
SH
INT0 (P3.2): External Interrupt 0
INT1(P3.3): External Interrupt 1
T0 (P3.4):Timer 0 External Input
T1 (P3.5):Timer 1 External Input
WR (P3.6): External Data Memory Write Strobe
P4.0P4.3
I/O
SH
RD (P3.7): External Data Memory Read Strobe
PORT 4: 4-bit bi-directional I/O port. The P4.3 also provides the alternate
function REBOOT which is H/W reboot from LD flash.
* Note : TYPE I: input, O: output, I/O: bi-directional, H: pull-high, L: pull-low, D: open drain S: Schmitt Trigger
Publication Release Date: Oct 07, 2010
- 7 - Revision A6.0

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W79E633A

The functions of this components is a 8-BIT MICROCONTROLLER.

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