參數(shù)資料
型號: MC705C9ACPE
廠商: Freescale Semiconductor
文件頁數(shù): 71/118頁
文件大?。?/td> 0K
描述: IC MCU 2.1MHZ 16K OTP 40-DIP
標準包裝: 9
系列: HC05
核心處理器: HC05
芯體尺寸: 8-位
速度: 2.1MHz
連通性: SCI,SPI
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 24
程序存儲器容量: 16KB(16K x 8)
程序存儲器類型: OTP
RAM 容量: 352 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
Capture/Compare Timer
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
56
Freescale Semiconductor
8.3.5 Input Capture Registers
When a selected edge occurs on the TCAP pin, the current high and low bytes of the 16-bit counter are
latched into the input capture registers (ICRH and ICRL). Reading ICRH before reading ICRL inhibits
further capture until ICRL is read. Reading ICRL after reading the status register clears the input capture
flag (ICF). Writing to the input capture registers has no effect.
Figure 8-6. Input Capture Registers (ICRH and ICRL)
NOTE
To prevent interrupts from occurring between readings of ICRH and ICRL,
set the interrupt flag in the condition code register before reading ICRH, and
clear the flag after reading ICRL.
8.3.6 Output Compare Registers
When the value of the 16-bit counter matches the value in the output compare registers (OCRH and
OCRL), the planned TCMP pin action takes place. Writing to OCRH before writing to OCRL inhibits timer
compares until OCRL is written. Reading or writing to OCRL after the timer status register clears the
output compare flag (OCF).
Figure 8-7. Output Compare Registers (OCRH and OCRL)
ICRH
$0014
Bit 7
654321
Bit 0
Read:
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Write:
Reset:
Unaffected by reset
ICRL
$0015
Bit 7
654321
Bit 0
Read:
Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2
Bit 1Bit 0
Write:
Reset:
Unaffected by reset
= Unimplemented
OCRH
$0016
Bit 7
654321
Bit 0
Write:
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Read:
Reset:
Unaffected by reset
OCRL
$0017
Bit 7
654321
Bit 0
Read:
Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2
Bit 1Bit 0
Write:
Reset:
Unaffected by reset
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