em78p210n ELAN Microelectronics Corp, em78p210n Datasheet - Page 16

• Manufacturer Part Number: em78p210n
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

EM78P210N
8-Bit Microcontroller with OTP ROM
10 •
6.2.7 R4 (Select Indirect Address)
Bits 7~6: not used, fixed to 0 all the time.
Bit 5 ~ 0: used to select registers (Address: 00 ~ 3F) in indirect addressing mode.
6.2.8 Bank 0-R5 (Port 5)
Bits 7 ~ 0 (P57 ~ P50): I/O data bits
6.2.9
Bits 7 ~ 0 (P67 ~ P60): I/O data bits
6.2.10 Bank 0-R7 (Port 7)
Bits 7, 3 ~ 0 (P77, P73 ~ P70): I/O data bits
Bits 6~4: not used, fixed to 0 all the time.
6.2.11 Bank 0-R8 (Port 8)
Bits 7~6, 4~2, 0: not used, fixed to 0 all the time.
Bit 5 (NREN):
Bit 1 (P81):
[Note]: P81 is input or open-drain for output pin.
6.2.12 Bank 0-R9~RD (Reserve)
Bits 7~0: not used, fixed to "0" all the time.
Bit 7
P57
Bit 7
Bit 7
Bit 7
P67
P77
0
Bank 0-R6 (Port 6)
Bit 6
P56
Bit 6
Bit 6
Bit 6
P66
0
0
Noise rejection enable
0 = disable noise rejection (Default)
1 = enable noise rejection. However in crystal oscillator mode
I/O data bit.
(LXT2), the noise rejection circuit is always disabled.
NREN
Bit 5
Bit 5
Bit 5
Bit 5
P55
P65
0
Bit 4
Bit 4
Bit 4
Bit 4
P54
P64
(This specification is subject to change without further notice)
0
0
Bit 3
Bit 3
Bit 3
Bit 3
P53
P63
P73
0
Product Specification (V1.2) 04.22.2008
Bit 2
Bit 2
Bit 2
Bit 2
P52
P62
P72
0
Bit 1
Bit 1
Bit 1
Bit 1
P51
P61
P71
P81
Bit 0
Bit 0
Bit 0
Bit 0
P50
P60
P70
0