參數(shù)資料
型號: MSM64167E-XXX
廠商: OKI ELECTRIC INDUSTRY CO LTD
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 0.7 MHz, MICROCONTROLLER, UUC80
封裝: 5.95 X 4.62 MM, DIE-80
文件頁數(shù): 19/31頁
文件大小: 268K
代理商: MSM64167E-XXX
26/31
Semiconductor
MSM64167E
FEDL64167E-02
FUNCTIONAL DESCRIPTION
CPU Peripheral Functions
A/D converter (ADC)
The MSM64167E has a 4-channel input dual-slope type A/D converter. In dual-slope A/D
conversion, the relationship between integral voltage and time is given by:
Vin/Vr = t1/t2
where,
t1 = given time for which an analog input voltage is integrated
Vr = reference voltage
Vin = voltage resulted from charging for t1
t2 = time required to discharge the voltage, from Vr to Vin
From the above equation, Vin is found.
The range of Vin is –0.8
±0.4 V. The A/D converter resolution time is programmable. The A/
D converter has a preamplifier for amplifying a microvoltage. It is suited to applications such
as thermometers, pressure gauges, and hygrometers.
LCD driver (LCD)
The MSM64167E has a built-in LCD driver for 31 outputs.
The LCD driver consists of 31 4-bit display registers (DSPR0-30), the Display Control Register
(DSPCON), a 31-output LCD driver circuit, and a bias generation circuit (BIAS).
There are three types of driving methods: 1/4 duty, 1/3 duty and 1/2 duty. Software selects the
duty mode.
A mask option can select either a common driver or a segment driver for each LCD driver pin.
A mask option can also specify assignment of each bit of the display register to each segment.
All the display registers must be selected by a mask option.
L0 to L7 of the LCD driver can be configured to be output ports by a mask option.
The relationship between the duty, the bias method, and the maximum segment number follows:
1/4 duty 1/3 bias method ------- 108 segments
1/3 duty 1/3 bias method ------- 84 segments
1/2 duty 1/2 bias method ------- 58 segments
Port (P0, P1, P2)
The MSM64167E has three input-output ports (P0, P1, P2) with 4 bits each. Each bit of the ports
can be configured to be (1) an input or output, (2) pull-up/pull-down resistor input or high
impedance input, and (3) NMOS open drain output or CMOS output. A change in the input level
of each pin of P0 and P1 generates an external interrupt 0 request, and a change in the input level
of each pin of P2 generates an external interrupt 1 request.
The serial port function and the timer function are assigned as the secondary functions.
Buzzer driver (BD)
The MSM64167E has a built-in buzzer driver with 2 buzzer output frequencies and 4 buzzer
output modes. Each buzzer output is selected by the Buzzer Control Register (BDCON) and the
Buzzer Frequency Control Register (BFCON).
Serial port (SIOP)
The MSM64167E has a serial port (SIOP). The serial port is a synchronous/asynchronous
selectable serial communication port. The transmit section and the receive section are independent
of each other, which allows simultaneous operation of transmission and receiving.
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