EM78159NAS EMC [ELAN Microelectronics Corp], EM78159NAS Datasheet - Page 35

• Manufacturer Part Number: EM78159NAS
• Description: 8-Bit Microcontroller with OTP ROM
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.0) 03.10.2006
(This specification is subject to change without further notice)
ERC (External RC oscillator mode); P55/OSCO act P55
ERC (External RC oscillator mode); P55/OSCO act OSCO
IRC (Internal RC oscillator mode) ; P55/OSCO act P55
IRC (Internal RC oscillator mode); P55/OSCO act OSCO
MCIRC (Manual calibration IRC mode); P55/OSCO act P55
MCIRC (Manual calibration IRC mode); P55/OSCO act OSCO
LXT (Low XTAL oscillator mode)
HXT (High XTAL oscillator mode) (default)
Bit 3 (HLP):
Bit 4 ~ Bit 6 (OSC0 ~ OSC2): Oscillator Modes Selection bits
Bit 7 (ENWDTB): Watchdog timer enable bit.
Bit 8 (CLKS0):
Bit 9 ~ Bit 12:
4.8.2 Customer ID Register (Word 1)
Bit 0 ~ Bit 1 ( RCM0 ~ RCM1): IRC mode selection bits
Bit 2 ~ Bit 5:
Bit12 Bit11 Bit10 Bit9
-
The transient point of system frequency between HXT and LXY is around 400 KHz.
RCOUT
-
Power selection
0 = Enable
1 = Disable
Instruction period option bit
Refer to Section 4.12 Instruction Set for further details.
Not used, but need to set to “1” all the time to preclude possible
error.
0 = Low power
1 = High power
Not used
RCM 1
4 oscillator time periods (default)
2 oscillator time periods
Mode
-
1
1
0
0
Bit8
-
RCM 0
Bit7
1
0
1
0
-
Word 0
WORD 0
NOTE
CYES
Bit6
Frequency (MHz)
Bit5
With Simulator
only
-
8-Bit Microcontroller with OTP ROM
455kHz
Bit4
4
8
1
-
Bit3
-
OSC2 OSC1 OSC0
CLK0
0
0
0
0
1
1
1
1
1
0
Bit2
-
RCM1 RCM0
Bit1
EM78P159N
0
0
1
1
0
0
1
1
Bit0
• 31
0
1
0
1
1
0
1
0