MC68HC908LD60IFU Freescale Semiconductor, MC68HC908LD60IFU Datasheet - Page 250

• Manufacturer Part Number: MC68HC908LD60IFU
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908LD60IFU

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 6MHz
• Program Memory Type: Flash
• Program Memory Size: 60KB
• Total Internal Ram Size: 1KB
• # I/os (max): 39
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• On-chip Adc: 6-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: PQFP
• Lead Free Status / Rohs Status: Compliant

Input/Output (I/O) Ports
Technical Data
250
NOTE:
DDRE[7:0] — Data Direction Register E Bits
Avoid glitches on port E pins by writing to the port E data register before
changing data direction register E bits from 0 to 1.
Figure 17-19
When bit DDREx is a logic 1, reading address $0008 reads the PTEx
data latch. When bit 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.
the operation of the port E pins.
Notes:
1. X = don’t care.
2. Hi-Z = high impedance.
3. Writing affects data register, but does not affect the input.
These read/write bits control port E data direction. Reset clears
DDRE[7:0], configuring all port E pins as inputs.
DDRE
Bit
0
1
1 = Corresponding port E pin configured as output
0 = Corresponding port E pin configured as input
READ DDRE ($0009)
WRITE DDRE ($0009)
WRITE PTE ($0008)
READ PTE ($0008)
PTE Bit
shows the port E I/O logic.
Input/Output (I/O) Ports
X
X
(1)
Table 17-6. Port E Pin Functions
Figure 17-19. Port E I/O Circuit
RESET
Input, Hi-Z
I/O Pin
Output
Mode
(2)
DDREx
PTEx
Read/Write
DDRE[7:0]
DDRE[7:0]
Accesses
to DDRE
Table 17-6
MC68HC908LD60
PTE[7:0]
Freescale Semiconductor
Read
Accesses to PTD
Pin
summarizes
PTE[7:0]
PTE[7:0]
—
Write
Rev. 1.1
PTEx
(3)