MCHC908JK3CPE Freescale Semiconductor, MCHC908JK3CPE Datasheet - Page 173
MCHC908JK3CPE
Manufacturer Part Number
MCHC908JK3CPE
Description
IC MCU 4K FLASH 20-PDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908JK1CDW.pdf
(212 pages)
Specifications of MCHC908JK3CPE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Peripherals
LED, LVD, POR, PWM
Number Of I /o
15
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.3 V
Data Converters
A/D 12x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
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14.5 Wait Mode
14.6 Stop Mode
14.7 Keyboard Module During Break Interrupts
MC68H(R)C908JL3
Freescale Semiconductor
—
Rev. 1.1
The keyboard modules remain active in wait mode. Clearing the
IMASKK bit in the keyboard status and control register enables keyboard
interrupt requests to bring the MCU out of wait mode.
The keyboard module remains active in stop mode. Clearing the
IMASKK bit in the keyboard status and control register enables keyboard
interrupt requests to bring the MCU out of stop mode.
The system integration module (SIM) controls whether the keyboard
interrupt latch can be cleared during the break state. The BCFE bit in the
break flag control register (BFCR) enables software to clear status bits
during the break state.
To allow software to clear the keyboard interrupt latch during a break
interrupt, write a logic 1 to the BCFE bit. If a latch is cleared during the
break state, it remains cleared when the MCU exits the break state.
To protect the latch during the break state, write a logic 0 to the BCFE
bit. With BCFE at logic 0 (its default state), writing to the keyboard
acknowledge bit (ACKK) in the keyboard status and control register
during the break state has no effect.
Keyboard Interrupt Module (KBI)
Keyboard Interrupt Module (KBI)
Technical Data
171
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