MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 162

• Manufacturer Part Number: MC68HC908JK8CP
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908JK8CP

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI
• Program Memory Type: Flash
• Program Memory Size: 8KB
• Total Internal Ram Size: 256Byte
• # I/os (max): 15
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 13-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 20
• Package Type: PDIP
• Lead Free Status / Rohs Status: Not Compliant

Input/Output (I/O) Ports
When DDREx is a logic 1, reading address $0008 reads the PTEx data latch. When DDREx is a logic 0,
reading address $0008 reads the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
162
DDRE Bit
1. X = don’t care.
2. Hi-Z = high impedance.
3. Writing affects data register, but does not affect the input.
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
0
1
PTE Bit
X
X
(1)
Table 11-5. Port E Pin Functions
I/O Pin Mode
Input, Hi-Z
Output
(2)
Table 11-5
Accesses to DDRE
Read/Write
DDRE[1:0]
DDRE[1:0]
summarizes the operation of the port E pins.
PTE[1:0]
Read
Pin
Accesses to PTE
PTE[1:0]
PTE[1:0]
Write
Freescale Semiconductor
(3)