em78p468n ELAN Microelectronics Corp, em78p468n Datasheet - Page 27

• Manufacturer Part Number: em78p468n
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.6) 12.31.2007
(This specification is subject to change without further notice)
Bit 3 (CNT1S): Counter 1 clock source select
Bits 2~0 (CNT1P2 ~ CNT1P20): Counter 1 prescaler select bits
6.2.17 IOCA1/HLPWTCR (High/Low Pulse Width Timer Control
(Address: 0Ah, Bit 0 of R5 = “1”)
Bit 7 (LPWTS): low-pulse width timer clock source select
Bits 6~4 (LPWTP2~ LPWTP0): low-pulse width timer prescaler select bits
Bit 3 (HPWTS): high-pulse width timer clock source select
Bits 2~0 (HPWTP2~ HPWTP0): high-pulse width timer prescaler select bits
LPWTS
Bit 7
HPWTP2
LPWTP2
CNT1P2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Register)
LPWTP2
Bit 6
“0”: Fs (Fs: sub-oscillator clock)
“1”: Fm (Fm: main-oscillator clock)
“0”: Fs (Fs: sub-oscillator clock)
“1”: Fm (Fm: main-oscillator clock)
“0”: Fs (Fs: sub-oscillator clock)
“1”: Fm (Fm: main-oscillator clock)
HPWTP1
LPWTP1
LPWTP1
CNT1P1
Bit 5
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
LPWTP0
Bit 4
HPWTP0
LPWTP0
CNT1P0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
HPWTS
0
1
0
1
0
1
0
1
Bit 3
HPWTP2
High-pulse Width Timer Scale
Low-pulse Width Timer Scale
Counter 1 Scale
Bit 2
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
8-Bit Microcontroller
HPWTP1
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
Bit 1
EM78P468N/L
HPWTP0
Bit 0
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