mg87fe Megawin Technology, mg87fe Datasheet - Page 13

• Manufacturer Part Number: mg87fe
• Description: 8 Bits Microcontroller
• Manufacturer: Megawin Technology

CKCON2 Register (0xBF)
CKCON2
The default value of XCKS=001010B for XTAL1=11MHz @ 12T.
XCKS5~0
OSCDR
EN6TR
Name
OSCDR
=0, the gain of crystal oscillator is enough for oscillation up to 48MHz.
=1, the gain of crystal oscillator is reduced. It will helpful in EMI reduction.
Regarding application not needing high frequency clock, it is recommended to do
so.
=0, MG87FE/L52 will run in 12T mode;
=1, MG87FE/L52 will run in 6T mode. It gets double performance than 12T.
The default value of this bit is load from Option Setting “EN6T”.
Set the crystal frequency value to define the time base of ISP/IAP programming.
Fill in the proper value according to XTAL1 as listed below.
Bit7
XTAL1 @ 12T
Megawin Technology Co., Ltd.
………..
45MHz
46MHz
47MHz
48MHz
1MHz
2MHz
3MHz
4MHz
EN6TR
Bit6
XCKS5
XTAL1 @ 6T
Bit5
22.5MHz
23.5MHz
………..
0.5MHz
1.5MHz
23MHz
24MHz
1MHz
2MHz
Preliminary
XCKS4
Bit4
XCKS5~0 setting
ver 1.3
XCKS3
000011B
101101B
101111B
000000B
000001B
000010B
101100B
101110B
………..
Bit3
XCKS2
Bit2
Date: 2009-JAN-20
MG87FE/L52
XCKS1
Bit1
XCKS0
Bit0
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