参数资料
型号: MC68HC11D3CP
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 2 MHz, MICROCONTROLLER, PDIP40
封装: DIP-40
文件页数: 120/131页
文件大小: 1640K
代理商: MC68HC11D3CP
MC68HC11D3
TIMING SYSTEM
MOTOROLA
TECHNICAL DATA
9-3
9.1 Timer Structure
Figure 9-1 shows the capture/compare system block diagram. The port A pin control
block includes logic for timer functions and for general-purpose I/O. For pins PA2,
PA1, and PA0, this block contains both the edge-detection logic and the control logic
that enables the selection of which edge triggers an input capture. The digital level on
PA[2:0] can be read at any time (read PORTA register), even if the pin is being used
for the input capture function. Pins PA[6:4] are used for either general-purpose output,
or as output compare pins. Pin PA3 can be used for general-purpose I/O, input capture
4, output compare 5, or output compare 1. When one of these pins is being used for
an output compare function, it cannot be written directly as if it were a general-purpose
output. Each of the output compare functions (OC5–OC2) is related to one of the port
A output pins. Output compare one (OC1) has extra control logic, allowing it optional
control of any combination of the PA[7:3] pins. The PA7 pin can be used as a general-
purpose I/O pin, as an input to the pulse accumulator, or as an OC1 output pin.
Table 9-1 Timer Summary
XTAL Frequencies
4.0 MHz
8.0 MHz
12.0 MHz
Other Rates
Control
1.0 MHz
2.0 MHz
3.0 MHz
(E)
Bits
1000 ns
500 ns
333 ns
(1/E)
PR[1:0]
Main Timer Count Rates
0 0
1 count —
overflow —
1.0 s
65.536 ms
500 ns
32.768 ms
333 ns
21.845 ms
(E/1)
(E/216)
0 1
1 count —
overflow —
4.0 s
262.14 ms
2.0 s
131.07 ms
1.333 s
87.381 ms
(E/4)
(E/218)
1 0
1 count —
overflow —
8.0 s
524.29 ms
4.0 s
262.14 ms
2.667 s
174.76 ms
(E/8)
(E/219)
1 1
1 count —
overflow —
16.0 s
1.049 s
8.0 s
524.29 ms
5.333 s
349.52 ms
(E/16)
(E/220)
相关PDF资料
PDF描述
M30290FCVHP 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP80
M30291M8T-XXXHP 16-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP64
M30842MC-XXXGP 32-BIT, MROM, 32 MHz, MICROCONTROLLER, PQFP144
MCF52221CAF66 32-BIT, FLASH, 66 MHz, RISC MICROCONTROLLER, PQFP100
MPC8313EVRAFFA 32-BIT, 333 MHz, MICROPROCESSOR, PBGA516
相关代理商/技术参数
参数描述
MC68HC11D3FB 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11D3FB1 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11D3FB3 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11D3FB4 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11D3FN 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers