MC68HC908AP8CB Freescale Semiconductor, MC68HC908AP8CB Datasheet - Page 267
MC68HC908AP8CB
Manufacturer Part Number
MC68HC908AP8CB
Description
IC MCU 8K FLASH 8MHZ 42SDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908AP8CFBE.pdf
(324 pages)
Specifications of MC68HC908AP8CB
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SCI, SPI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
32
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
42-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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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.
Table 16-3
16.4 Port C
Port C is an 8-bit special-function port that shares one of its pins with the IRQ2, four of its pins with the
SPI module, and two of its pins with the IRSCI module.
16.4.1 Port C Data Register (PTC)
The port C data register contains a data latch for each of the eight port C pins.
Freescale Semiconductor
Alternative Function:
summarizes the operation of the port B pins.
1. X = don’t care.
2. Hi-Z = high impedance.
3. Writing affects data register, but does not affect input.
DDRB
Bit
0
1
Address:
Reset:
Read:
Write:
READ DDRB ($0005)
WRITE DDRB ($0005)
WRITE PTB ($0001)
READ PTB ($0001)
PTB Bit
X
X
(1)
SCRxD
$0002
PTC7
Bit 7
Figure 16-9. Port C Data Register (PTC)
I/O Pin Mode
Input, Hi-Z
MC68HC908AP Family Data Sheet, Rev. 4
Table 16-3. Port B Pin Functions
RESET
Figure 16-8. Port B I/O Circuit
SCTxD
Output
PTC6
6
(2)
SPSCK
PTC5
5
Accesses to DDRB
DDRBx
PTBx
Read/Write
DDRB[7:0]
DDRB[7:0]
# PTB3–PTB0 are open-drain pins when configured as outputs.
PTB7–PTB4 have schmitt trigger inputs.
Unaffected by reset
PTC4
SS
4
PTC3
MOSI
3
PTB[7:0]
Read
Pin
Accesses to PTB
PTC2
MISO
2
PTB[7:0]
PTB[7:0]
PTC1
Write
1
PTBx
(3)
#
PTC0
IRQ2
Bit 0
Port C
265
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