參數(shù)資料
型號(hào): LC87F57C8A
廠商: Sanyo Electric Co.,Ltd.
英文描述: 8 BIT SINGLE CHIP MICROCONTROLLER
中文描述: 8位單片機(jī)
文件頁(yè)數(shù): 24/28頁(yè)
文件大?。?/td> 336K
代理商: LC87F57C8A
LC87F57C8A
24/27
Ver.1.00
Main System Clock Oscillation Circuit Characteristics
The characteristics in the table bellow is based on the following conditions:
1. Using the standard oscillation evaluation board SANYO has provided.
2. Using the external peripheral parts with the indicated value.
3. The recommended circuit parameters for the peripheral parts are verified by the oscillator manufacturer.
Table 1. Recommended circuit parameters for the main system clock using the ceramic resonator
Recommended circuit
parameters
Frequency Manufacturer
Oscillator
C1
C2
Oscillation stabilizing
time
typ
Rd1
Operating
supply
voltage range
max
Note
CSLS10M0G53-
B0
(15pF) (15pF) 0
4.5 – 5.5V
0.03ms
0.30ms Internal C1,C2
10MHz
MURATA
CSTCE10M0G52-
R0
CSTLS5M00G53-
B0
CSTCR5M00G53
-R0
(10pF) (10pF)
0
4.5 – 5.5V
0.03ms
0.30ms Internal C1,C2
(15pF) (15pF) 0
2.5 – 5.5V
0.03ms
0.30ms
Internal C1,C2
5MHz
MURATA
(15pF) (15pF) 0
2.5 – 5.5V
0.03ms
0.30ms Internal C1,C2
*The oscillation stabilizing time is a period until the oscillation becomes stable after VDD becomes higher
than minimum operating voltage. (Refer to Figure4)
Subsystem Clock Oscillation Circuit Characteristics
The characteristics in the table bellow is based on the following conditions:
1. Using the standard oscillation evaluation board SANYO has provided.
2. Using the external peripheral parts with the indicated value.
3. The recommended circuit parameters for the peripheral parts are verified by the oscillator manufacturer.
Table 2. Recommended circuit parameters for the subsystem clock using the crystal oscillation
Recommended circuit
Parameters
Frequency Manufacturer
Oscillator
C3
C4
Rf
32.768kHz SEIKO EPSON
MC-306
9pF 9pF OPEN 820k
*The oscillation stabilizing time is the period until the oscillation becomes stable, after executing the
instruction which starts the sub-clock oscillator or after releasing a HOLD mode. (Refer to Figure4)
(Notes)
Since the oscillation frequency precision is affected by the circuit pattern, place the oscillation
related parts as close to the oscillation pins as possible, using the shortest possible pattern length.
Oscillation stabilizing
time
typ
1.5s
Rd2
Operating
supply voltage
range
2.5 – 5.5V
max
3s
Note
Figure 1
Ceramic oscillation circuit
Figure 2
Crystal oscillation circuit
Figure 3 AC timing point
C1
C2
CF
CF2
CF1
C3
Rd2
C4
X’tal
XT2
XT1
Rf
Rd1
0.5VDD
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