參數(shù)資料
型號: MC68HC916X1
廠商: Motorola, Inc.
英文描述: 16-Bit Modular Microcontroller(16位模塊化微控制器)
中文描述: 16位微控制器模塊(16位模塊化微控制器)
文件頁數(shù): 95/172頁
文件大小: 1035K
代理商: MC68HC916X1
MC68HC916X1
MC68HC916X1TS/D
MOTOROLA
95
TCNT
— Timer Counter Register
TCNT is the 16-bit free-running counter associated with the input capture, output compare, and
pulse accumulator functions of the GPT module.
$YFF90A
PACTL enables the pulse accumulator and selects either event counting or gated mode. In event
counting mode, PACNT is incremented each time an event occurs. In gated mode, it is incremented
by an internal clock.
PAIS — PAI Pin State (Read Only)
PAEN — Pulse Accumulator Enable
0 = Pulse accumulator disabled
1 = Pulse accumulator enabled
PAMOD — Pulse Accumulator Mode
0 = External event counting
1 = Gated time accumulation
PEDGE — Pulse Accumulator Edge Control
The effects of PAMOD and PEDGE are shown in
Table 46
.
PCLKS — PCLK Pin State (Read Only)
I4/O5 — Input Capture 4/Output Compare 5
0 = Output compare 5 enabled
1 = Input capture 4 enabled
PACLK[1:0] — Pulse Accumulator Clock Select (Gated Mode)
Table 47
shows the PACLK[1:0] bit field effects.
PACNT — Pulse Accumulator Counter
Eight-bit read/write counter used for external event counting or gated time accumulation.
PACTL/PACNT
— Pulse Accumulator Control Register/Counter
$YFF90C
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
PAIS
PAEN
PAMOD PEDGE PCLKS
I4/O5
PACLK[1:0]
PULSE ACCUMULATOR COUNTER
RESET:
U
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 46 PAMOD/PEDGE Effects
PAMOD
0
0
1
1
PEDGE
0
1
0
1
Effect
PAI falling edge increments counter
PAI rising edge increments counter
Zero on PAI inhibits counting
One on PAI inhibits counting
Table 47 PACLK[1:0] Bit Field
PACLK[1:0]
00
01
10
11
Pulse Accumulator Clock Selected
System clock divided by 512
Same clock used to increment TCNT
TOF flag from TCNT
External clock, PCLK
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