em78p164n ELAN Microelectronics Corp, em78p164n Datasheet - Page 53

• Manufacturer Part Number: em78p164n
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.4) 05.28.2010
(This specification is subject to change without further notice)
Mnemonic
Bit
1
0
Bit 12 Bit 11 Bit 10
1
-
-
Bits 6 ~ 5 (RCM1 ~ RCM0): RC mode selection bits
Bits 4 ~ 1 (OSC3 ~ OSC0): oscillator mode selection bits
Bit 0 (RCOUT): Selection bit of Oscillator output or I/O port.
5.12.3 Customer ID Register (Word 2)
Bit 12 (Unused): unused bit, set to 1 all the time
Bit 11 (Unused): unused bit, set to 1 all the time
Bit 10 (CMP_DE): comparator de-glitch enable bit
Bit 9 (Unused): unused bit, set to 1 all the time
Bit 8 (RESETEN): P63//RST pin select bit
ERC
ERC
IRC
IRC
LXT1 (Frequency range of LXT1 mode is 100kHz ~ 1 MHz)
HXT1 (Frequency range of HXT mode is 12 MHz ~ 20 MHz)
LXT2 (Frequency range of XT mode is 32kHz)
HXT2 (Frequency range of XT mode is 6 MHz ~ 12 MHz.)
XT (Frequency range of XT mode is 1 MHz ~ 6 MHz) (default)
1
-
-
RCM 1
2
2
1
1
(Internal RC oscillator mode); P64/OSCO functions as P64
(Internal RC oscillator mode); P64/OSCO funtions as OSCO
1
1
0
0
RCOUT
(External RC oscillator mode); P64/OSCO functions as OSCO
CMP_DE
(External RC oscillator mode); P64/OSCO funcions as P64
High
Low
0
1
0: disable
1: enable
0: P63//RST set to /RST pin
1: P63//RST set to P63 pin
Bit 9
RCM 0
1
-
-
1
0
1
0
RESETEN
Oscillator Modes
/RST
Bit 8
P63
OSCO output system clock (default)
OSCO pin is open drain
Word 1
EFT_SEL
Short
Long
Bit 7
Pin Function
Frequency (MHz)
455kHz
16
4.5ms
18ms
4
8
SUT0
Bit 6
8-Bit Microcontroller with OTP ROM
Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
1
-
-
1
-
-
OSC3 OSC2 OSC1 OSC0
1
-
-
0
0
0
0
0
0
1
0
0
1
-
-
EM78P164N
1
1
0
0
0
0
1
1
1
1
-
-
0
0
1
1
0
0
1
1
1
Bit 0
• 47
0
1
0
1
0
1
0
1
1
1
-
-