MC68HC912B32VFU8 Freescale Semiconductor, MC68HC912B32VFU8 Datasheet - Page 182
MC68HC912B32VFU8
Manufacturer Part Number
MC68HC912B32VFU8
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC912B32VFU8.pdf
(334 pages)
Specifications of MC68HC912B32VFU8
Cpu Family
HC12
Device Core Size
16b
Frequency (max)
8MHz
Interface Type
SCI/SPI
Program Memory Type
EPROM
Program Memory Size
32KB
Total Internal Ram Size
1KB
# I/os (max)
63
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
80
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HC912B32VFU8
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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Enhanced Capture Timer (ECT) Module
13.4.18 Input Control Overwrite Register
Read: Anytime
Write: Anytime
An IC register is empty when it has been read or latched into the holding register. A holding register is
empty when it has been read.
NOVWx — No Input Capture Overwrite Bits
13.4.19 Input Control System Control Register
Read: Anytime
Write: May be written once (SMODN = 1). Writes are always permitted when
SHxy — Share Input Action of Input Capture Channels x and y Bits
TFMOD — Timer Flag-Setting Mode Bit
182
Use of the TFMOD bit in the ICSYS register ($AB) in conjunction with the use of the ICOVW register
($AA) allows a timer interrupt to be generated after capturing two values in the capture and holding
registers instead of generating an interrupt for every capture.
0 = The contents of the related capture register or holding register can be overwritten when a new
1 = The related capture register or holding register cannot be written by an event unless they are
0 = Normal operation
1 = The channel input x causes the same action on the channel y. The port pin x and the
SMODN = 0.
input capture or latch occurs.
empty (see
is read or latched in the holding register.
corresponding edge detector is used to be active on the channel y.
Address: $00AA
Address: $00AB
Reset:
Reset:
Read:
Read:
Write:
Write:
Figure 13-40. Input Control System Control Register (ICSYS)
13.3.1 IC
Figure 13-39. Input Control Overwrite Register (ICOVW)
NOVW7
SH37
Bit 7
Bit 7
0
0
NOVW6
Channels). This will prevent the captured value to be overwritten until it
SH26
6
0
6
0
M68HC12B Family Data Sheet, Rev. 9.1
NOVW5
SH15
5
0
5
0
NOVW4
SH04
4
0
4
0
NOVW3
TFMOD
3
0
3
0
NOVW2
PACMX
2
0
2
0
NOVW1
BUFEN
1
0
1
0
Freescale Semiconductor
NOVW0
LATQ
Bit 0
Bit 0
0
0
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