MC68HC908LB8CPE Freescale Semiconductor, MC68HC908LB8CPE Datasheet - Page 139
MC68HC908LB8CPE
Manufacturer Part Number
MC68HC908LB8CPE
Description
IC MCU 8K FLASH 8MHZ 20DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908LB8CDWE.pdf
(234 pages)
Specifications of MC68HC908LB8CPE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Peripherals
LVR, POR, PWM
Number Of I /o
18
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 7x8b
Oscillator Type
Internal
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908LB8CPE
Manufacturer:
IR
Quantity:
10
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DDRC1–DDRC0 — Data Direction Register C Bits
Figure 14-11
When bit DDRCx is a 1, reading address $0002 reads the PTCx data latch. When bit DDRCx is a 0,
reading address $0002 reads the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
Freescale Semiconductor
These read/write bits control port C data direction. Reset clears DDRC1–DDRC0, configuring all port
C pins as inputs.
1 = Corresponding port C pin configured as output
0 = Corresponding port C pin configured as input
shows the port C I/O logic.
Address:
Avoid glitches on port C pins by writing to the port C data register before
changing data direction register C bits from 0 to 1.
Figure 14-11
Reset:
Read:
Write:
READ DDRC ($0006)
WRITE DDRC ($0006)
WRITE PTC ($0002)
READ PTC ($0002)
PTCPUEx
$0006
Bit 7
0
0
Figure 14-10. Data Direction Register C (DDRC)
does not apply to PTC2.
= Unimplemented
6
0
0
RESET
Figure 14-11. Port C I/O Circuit
MC68HC908LB8 Data Sheet, Rev. 1
V
DD
INTERNAL
PULLUP
DEVICE
5
0
0
Table 14-3
NOTE
NOTE
DDRCx
PTCx
4
0
0
summarizes the operation of the port C pins.
3
0
0
2
0
0
DDRC1
1
0
DDRC0
Bit 0
PTCx
0
Port C
139
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