参数资料
型号: SPMC16V1CPU20
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 20.97 MHz, MICROCONTROLLER, PQFP100
封装: TQFP-100
文件页数: 26/128页
文件大小: 571K
代理商: SPMC16V1CPU20
MC68HC16V1
MOTOROLA
MC68HC16V1TS/D
121
OC1D[5:1] — OC1 Data Field
OC1D[5:1] correspond to OC[5:1].
0 = If OC1 mask bit is set, clear the corresponding output compare pin on OC1 match.
1 = If OC1 mask bit is set, set the corresponding output compare pin on OC1 match.
TCNT — Timer Counter Register
$YFF90A
TCNT is the 16-bit free-running counter associated with the input capture, output compare, and pulse
accumulator functions of the GPT module.
PACTL enables the pulse accumulator and selects either event counting or gated mode. In event count-
ing 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 62.
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 63 shows the PACLK[1:0] bit field effects.
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
Table 62 PAMOD/PEDGE Effects
PAMOD
PEDGE
Effect
0
PAI falling edge increments counter
0
1
PAI rising edge increments counter
1
0
Zero on PAI inhibits counting
1
One on PAI inhibits counting
Table 63 PACLK[1:0] Bit Field
PACLK[1:0]
Pulse Accumulator Clock Selected
00
System clock divided by 512
01
Same clock used to increment TCNT
10
TOF flag from TCNT
11
External clock, PCLK
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