Справочник Пользователя для IBM MiEM78P468L
EM78P468N/EM78P468L
8-Bit Microcontroller
Product Specification (V1.5) 02.15.2007
• 21
(This specification is subject to change without further notice)
Bit 3 (CNT1S):
Counter 1 clock source select 0/1
→ Fs/ Fm*
Bits 2~0 (CNT1P2 ~ CNT1P20):
Counter 1 prescaler select bits
CNT1P2
CNT1P1
CNT1P0
Counter 1 Scale
0 0 0
1:2
0 0 1
1:4
0 1 0
1:8
0 1 1
1:16
1 0 0
1:32
1 0 1
1:64
1 1 0
1:128
1 1 1
1:256
6.2.17 IOCA1/HLPWTCR (High/Low Pulse Width Timer Control Register)
(Address: 0Ah, Bit 0 of R5 = “1”)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
LPWTS LPWTP2 LPWTP1 LPWTP0 HPWTS HPWTP2
HPWTP1 HPWTP0
Bit 7 (LPWTS):
low-pulse width timer clock source select 0/1
→ Fs/ Fm*
(*Fs: sub-oscillator clock, Fm: main-oscillator clock)
Bits 6~4 (LPWTP2~ LPWTP0):
low-pulse width timer prescaler select bits
LPWTP2
LPWTP1
LPWTP0
Low-pulse Width Timer Scale
0 0 0
1:2
0 0 1
1:4
0 1 0
1:8
0 1 1
1:16
1 0 0
1:32
1 0 1
1:64
1 1 0
1:128
1 1 1
1:256
Bit 3 (HPWTS):
high-pulse width timer clock source select 0/1
→ Fs/ Fm*
Bits 2~0 (HPWTP2~ HPWTP0):
high-pulse width timer prescaler select bits
HPWTP2
HPWTP1
HPWTP0
High-pulse Width Timer Scale
0 0 0
1:2
0 0 1
1:4
0 1 0
1:8
0 1 1
1:16
1 0 0
1:32
1 0 1
1:64
1 1 0
1:128
1 1 1
1:256