MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 157

• 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

When DDRBx is a logic 1, reading address $0001 reads the PTBx data latch. When DDRBx is a logic 0,
reading address $0001 reads the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
11.4 Port D
Port D is an 8-bit special function port that shares two of its pins with the serial communications interface
module (see
pins with the analog-to-digital converter module (see
sink (25mA) and programmable pull-up. PTD2, PTD3, PTD6 and PTD7 each has LED sink capability.
Freescale Semiconductor
Chapter
DDRB 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
PTD0–PTD1 are available on 28-pin and 32-pin packages only.
READ DDRB ($0005)
WRITE DDRB ($0005)
WRITE PTB ($0001)
READ PTB ($0001)
9), two of its pins with the timer 1 interface module, (see
PTB Bit
X
X
(1)
Table 11-3. Port B Pin Functions
I/O Pin Mode
RESET
Input, Hi-Z
Figure 11-9. Port B I/O Circuit
Output
(2)
Table 11-3
NOTE
Accesses to DDRB
DDRBx
PTBx
Chapter
Read/Write
DDRB[7:0]
DDRB[7:0]
summarizes the operation of the port B pins.
10). PTD6 and PTD7 each has high current
To Analog-To-Digital Converter
PTB[7:0]
Read
Pin
Accesses to PTB
Chapter
PTB[7:0]
PTB[7:0]
Write
PTBx
8), and four of its
(3)
Port D
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