mc68hc908gr8a Freescale Semiconductor, Inc, mc68hc908gr8a Datasheet - Page 129

• Manufacturer Part Number: mc68hc908gr8a
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

When bit DDREx is a 1, reading address $0008 reads the PTEx data latch. When bit DDREx is a 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.
Freescale Semiconductor
1. X = Don’t care
2. Hi-Z = High impedance
3. Writing affects data register, but does not affect input.
DDRE
Bit
0
1
PTE
X
Bit
X
(1)
Input, Hi-Z
I/O Pin
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
Output
Mode
(2)
Table 12-6. Port E Pin Functions
Accesses to DDRE
DDRE1–DDRE0
DDRE1–DDRE0
Table 12-6
Read/Write
summarizes the operation of the port E pins.
PTE1–PTE0
Read
Pin
Accesses to PTE
PTE1–PTE0
PTE1–PTE0
Write
(3)
Port E
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