MC68HC908GP16CFB Freescale Semiconductor, MC68HC908GP16CFB Datasheet - Page 124

• Manufacturer Part Number: MC68HC908GP16CFB
• Description: MCU 8-BIT 16K FLASH 44-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP16CFB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 33
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Input/Output (I/O) Ports (PORTS)
Figure 12-15
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.
124
X = don’t care
Hi-Z = high impedance
1. Writing affects data register, but does not affect input.
DDRE
shows the port E I/O logic.
Bit
0
1
READ DDRE ($000A)
WRITE DDRE ($000A)
WRITE PTE ($0008)
READ PTE($0008)
PTE
Bit
X
X
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
Input, Hi-Z
I/O Pin
Output
Mode
Table 12-5. Port E Pin Functions
RESET
Figure 12-15. Port E I/O Circuit
Accesses to DDRE
Table 12-5
Read/Write
DDREx
DDRE[1:0]
DDRE[1:0]
PTEx
summarizes the operation of the port E pins.
PTE[1:0]
Read
Pin
Accesses to PTE
PTE[1:0]
PTE[1:0]
Freescale Semiconductor
Write
PTEx
(1)