参数资料
型号: MC68HC11F1VFN3
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, EEPROM, 3 MHz, MICROCONTROLLER, PQCC68
封装: PLASTIC, LCC-68
文件页数: 27/162页
文件大小: 4554K
代理商: MC68HC11F1VFN3
TIMING SYSTEM
MC68HC11F1
9-16
TECHNICAL DATA
Figure 9-3 Pulse Accumulator
Pulse accumulator control bits are also located within two timer registers, TMSK2 and
TFLG2, as described in the following paragraphs.
9.6.1 Pulse Accumulator Control Register
Four of this register's bits control an 8-bit pulse accumulator system. Another bit en-
ables either the OC5 function or the IC4 function, while two other bits select the rate
for the real-time interrupt system.
Table 9-5 Pulse Accumulator Timing
Crystal Frequency
(4
E)
E Clock
(E)
Cycle Time
(1/E)
26/E
(64/E)
PACNT Overflow
(16384/E)
4.0 MHz
1.0 MHz
1000 ns
64
s
16.384 ms
8.0 MHz
2.0 MHz
500 ns
32
s
8.192 ms
12.0 MHz
3.0 MHz
333 ns
21.33
s
5.461 ms
16.0 MHz
4.0 MHz
250 ns
16.0
s
4.096 ms
PEDGE
PAMOD
PAEN
PACTL CONTROL
INTERNAL
DATA BUS
PACNT 8-BIT COUNTER
PA7/
PAI/
OC1
INTERRUPT
REQUESTS
PAIF
PAOVF
TFLG2 INTERRUPT STATUS
PAOVI
PAII
PAOVF
PAOVI
PAIF
PAII
TMSK2 INT ENABLES
1
2
OVERFLOW
ENABLE
DISABLE
FLAG SETTING
CLOCK
PAI EDGE
PAEN
2:1
MUX
OUTPUT
BUFFER
INPUT BUFFER
AND
EDGE DETECTOR
FROM
MAIN TIMER
OC1
DATA BUS
PIN
E
÷ 64 CLOCK
(FROM MAIN TIMER)
FROM DATA
DIRECTION
BIT FOR
PORT A PIN 7
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相关PDF资料
PDF描述
MC68HC705J2CP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20
MC68HLC908QY1DT 8-BIT, FLASH, 2 MHz, MICROCONTROLLER, PDSO16
MC68HLC908QY4P 8-BIT, FLASH, 2 MHz, MICROCONTROLLER, PDIP16
MC912DT128PCPV 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP112
MCF5485CZP200 32-BIT, 200 MHz, RISC PROCESSOR, PBGA388
相关代理商/技术参数
参数描述
MC68HC11F1VFN4 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11F1VFNE3 制造商:Freescale Semiconductor 功能描述:
MC68HC11F1VFU 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11F1VFU1 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11F1VFU3 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers