參數(shù)資料
型號： S1C62920D
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 1.3 MHz, MICROCONTROLLER, UUC63
封裝： DIE-63
文件頁數(shù)： 54/78頁
文件大?。?/td> 874K
代理商： S1C62920D
50
EPSON
S1C62920 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (R/F Converter)
DBGOS: Debugging element selection (D0HD3)
Selects an element to be oscillated during the debug mode.
When "1" is written:
Sensor
When "0" is written:
Reference resistance
Reading:
Valid
When "1" is written to DBGOS, sensor is continuously oscillated during the debug mode, and when "0" is
written, reference resistance is continuously oscillated. This selection is valid only in the debug mode.
At initial reset, this register is set to "0".
RFDBG: Debug mode selection (D0HD2)
Selects the debug mode of the R/F converter.
When "1" is written:
Debug mode
When "0" is written:
Normal mode
Reading:
Valid
When "1" is written to RFDBG, the debug mode is selected, and when "0" is written, the normal mode is
selected. When the debug mode is set, the oscillating operation of the element side selected by the DBGOS
register can be done continuously.
At initial reset, this register is set to "0".
RFCLK: Input clock selection (D0HD1)
Select an input clock of the time base counter.
When "1" is written:
OSC3
When "0" is written:
OSC1
Reading:
Valid
When "1" is written to RFCLK, the OSC3 clock is selected. When "0" is written, the OSC1 clock (Typ. 32.768
kHz) is selected.
The initial value must be set on the measurement counter so that the time base counter will not overflow
while CR oscillation is being counted.
At initial reset, these registers are set to "0".
SENS0, SENS1: Sensor selection (D1HD0, D1)
Selects a sensor to be R/F-converted.
Table 4.10.5.2 Sensor selection
SENS1
SENS0
Sensor selected
1
X
SEN2
0
1
SEN1
0
SEN0
At initial reset, this register is set to "0".
MC0–MC15: Measurement counter (D3H–D6H)
This counter counts up according to the CR oscillation clock. It permits writing and reading on a 4-bit basis.
The complement of the number of clocks to be counted by the oscillation of the reference resistance, must
be entered in this counter prior to R/F conversion.
If R/F conversion is initiated, the counter counts up from the set initial value, first according to the oscilla-
tion clock of the reference resistance. When the counter reaches "0000H" due to overflow, the oscillation of
the reference resistance stops, and the sensor starts oscillating. The counter continues counting according to
the sensor oscillation clock. Counting time during the CR oscillation of the reference resistance is calculated
by the time base counter. The measurement counter stops counting when the same period of time elapses.
Number of clocks counted by the sensor oscillation can be evaluated from the value indicated by the
counter when it stops. Calculate the target value by processing the above counted number according to the
program.
Measurable range and the overflow of the counter must be taken into account when setting an initial value
to be entered prior to R/F conversion.
After an initial reset, data in this counter become indefinite.
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