MC68HC705C8ACP Freescale Semiconductor, MC68HC705C8ACP Datasheet - Page 99
MC68HC705C8ACP
Manufacturer Part Number
MC68HC705C8ACP
Description
IC MCU 4MHZ 8K OTP 40-DIP
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet
1.MC68HC705C8ACFN.pdf
(222 pages)
Specifications of MC68HC705C8ACP
Core Processor
HC05
Core Size
8-Bit
Speed
2.1MHz
Connectivity
SCI, SPI
Peripherals
POR, WDT
Number Of I /o
24
Program Memory Size
8KB (8K x 8)
Program Memory Type
OTP
Ram Size
304 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC705C8ACP
Manufacturer:
MOTOROLA
Quantity:
13
Company:
Part Number:
MC68HC705C8ACPE
Manufacturer:
ON
Quantity:
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MC68HC705C8A — Rev. 3
MOTOROLA
NOTE:
Register Name and Address: Alternate Timer Register High — $001A
Register Name and Address: Alternate Timer Register Low — $001B
Reading ATRH returns the current value of the high byte of the counter
and causes the low byte to be latched into a buffer, as shown in
Figure
To prevent interrupts from occurring between readings of ATRH and
ATRL, set the interrupt mask (I bit) in the condition code register before
reading ATRH, and clear the mask after reading ATRL.
Reset:
Reset:
Read:
Read:
Write:
Write:
Freescale Semiconductor, Inc.
$001A
Figure 8-9. Alternate Timer Registers (ATRH and ATRL)
For More Information On This Product,
8-10.
Bit 15
Bit 7
Bit 7
15
ALTERNATE TIMER REGISTER HIGH
Figure 8-10. Alternate Timer Register Reads
Go to: www.freescale.com
Capture/Compare Timer
= Unimplemented
Bit 14
Bit 6
6
READ ATRH
Bit 13
Bit 5
5
Reset initializes ATRH to $FF
Reset initializes ATRL to $FC
INTERNAL DATA BUS
LATCH
Bit 12
Bit 4
8
4
7
7
ALTERNATE TIMER REGISTER LOW
Bit 11
Bit 3
3
LOW BYTE BUFFER
Bit 10
Bit 2
2
Capture/Compare Timer
Timer I/O Registers
Bit 9
Bit 1
1
Technical Data
0
0
$001B
Bit 0
Bit 8
Bit 0
99
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