Sino Wealth 8051 Manual

Enhanced 8051 Microcontroller with 24 channels Touch-key input and PWM

1. Features

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8 bits micro-controller with Pipe-line structured 8051
compatible instruction set
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Flash ROM: 64K Bytes
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RAM: internal 256 Bytes, external 1280 Bytes, LCD
RAM 28 Bytes, Touchkey RAM 48 Bytes
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EEPROM-Like:build-in 4096 Bytes(code option)
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Operation Voltage:
f = 32.768kHz - 24MHz, V
OSC
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Oscillator (code option)
- Crystal oscillator: 32.768kHz
- Crystal oscillator: 2MHz - 16MHz
- Ceramic oscillator: 2MHz - 16MHz
- Internal RC oscillator: 24MHz (± 2%)/128K (± 10%)
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42/46 CMOS bi-directional I/O pins (44Pin/48Pin)
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Built-in pull-up resistor for input pin (30kΩ)
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Eight large current driver I/O
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24 channels touch-key input
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Three 16-bit timer/counters T3 and T4, T5
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PCA0 containing two comparison/ capture modules
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Two channels 12-bits PWM timer
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SPI (Master/slave Mode)
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TWI (I2C Interface)
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Powerful interrupt sources:
- Timer3, 4, 5, PCA0
- INT0-3
- INT4: 8 input
- ADC, EUART, SPI, TouchKey
- PWM, SCM, CRC, TWI, LPD, LED
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Internal Logic Configuration Module (LCM)
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Three Enhanced UART (EUART) with own baud rate
generator

2. General Description

The SH79F9461 is a high performance 8051 compatible micro-controller. The SH79F9461 can perform more fast operation
speed and higher calculation performance, if compare SH79F9461 with standard 8051 at same clock speed.
The SH79F9461 retains most features of the standard 8051. These features include internal 256 bytes RAM, Three UART
andINT0, INT1, INT2, INT3, INT4. In addition, SH79F9461 provides external 1280 bytes RAM. It also contains 64K bytes Flash
memory block for program storage.
The SH79F9461 not only include many standard communication modules, such as EUART, TWI, SPI and so on, but also
include dimming LED, LCD diver, 12bit ADC, PWM timer, etc.
In addition, the SH79F9461 also have Touch Key module, CRC module, Logic configurable module (LCM) built in it.
For high reliability and low cost issues, the SH79F9461 builds in Watchdog Timer, Low Voltage Reset function and system
clock monitor. And SH79F9461 also supports two power saving modes to reduce power consumption.
DS000017E
= 2.0V - 5.5V
DD
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9 analog inputs 12-bit Analog Digital Converter
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LED driver:
- 8 COM/16 SEG LED driver with diming mode
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LCD driver:
- 8 X 24dots (1/8 duty 1/4 bias)
- 6 X 26dots (1/6 duty 1/4 bias or 1/3 bias)
- 5 X 27dots (1/5 duty 1/3 bias)
- 4 X 28dots (1/4 duty 1/3 bias)
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Built-in low voltage Reset (LVR) function (code
option)
- LVR Voltage1: 4.1V
- LVR Voltage2: 3.7V
- LVR Voltage3: 2.8V
- LVR Voltage4: 2.1V
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Built-in CRC verification module, the verify size
can be selected
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Low Power Detect (LPD) Module with 16 level
optional
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Support single line simulation and download
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CPU Machine period:
- 1 oscillator clock
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Built-in Watch Dog Timer (WDT)
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Built-in oscillator Warm-up timer
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Support Low power operation modes:
- Idle Mode
- Power-Down Mode
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Flash Type
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Package:
- TQFP48
- LQFP44
1
SH79F9461
V2.1