MCHC908JW32FAE Freescale Semiconductor, MCHC908JW32FAE Datasheet - Page 172

• Manufacturer Part Number: MCHC908JW32FAE
• Description: IC MCU 32K FLASH 8MHZ 48-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCHC908JW32FAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, USB
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 29
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 48-LQFP
• Controller Family/series: HC08
• No. Of I/o's: 48
• Ram Memory Size: 1KB
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Embedded Interface Type: SPI
• Rohs Compliant: Yes
• Processor Series: HC08JW
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: SPI, USB
• Number Of Programmable I/os: 29
• Number Of Timers: 2
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, DEMO908GZ60E, M68EML08GZE, KITUSBSPIDGLEVME, KITUSBSPIEVME, KIT33810EKEVME
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Input/Output (I/O) Ports
13.3 Port B
Port B is a 8-bit general-purpose bidirectional I/O port; open-drain when configured as output.
13.3.1 Port B Data Register
The port B data register contains a data latch for each of the eight port B pins.
PTB[7:0] — Port B Data Bits
LED Drive — Direct LED Driver
Pullup — Programmable Pullup
13.3.2 Data Direction Register B
Data direction register B determines whether each port B pin is an input or an output. Writing a logic 1 to
a DDRB bit enables the output buffer for the corresponding port B pin; a logic 0 disables the output buffer.
172
These read/write bits are software programmable. Data direction of each port B pin is under control of
the corresponding bit in data direction register B. Reset has no effect on port B data.
The LED direct drive bit, LEDB[7:0], in the port option control register (POCR) controls the drive
options for PTB[7:0]. (See
The Pullup control bit, PULL[7:0]EN, in the pullup control register (PULLCR) controls the optional
pullup for PTB[7:0]. (See
Additional
Additional
Function:
Function:
Address:
1. X = don’t care
2. Hi-Z = high impedance
3. Writing affects data register, but does not affect input
Reset:
Read:
Write:
DDRA
Bit
0
1
LED drive
Optional
$0001
pullup
PTB7
Bit 7
PTA Bit
13.7 Port
X
13.7 Port
X
(1)
LED drive
Figure 13-5. Port B Data Register (PTB)
Optional
pullup
PTB6
6
Table 13-2. Port A Pin Functions
MC68HC908JW32 Data Sheet, Rev. 6
Options.)
I/O Pin Mode
Input, Hi-Z
Options.)
LED drive
Optional
pullup
PTB5
Output
5
(2)
LED drive
Optional
Unaffected by reset
pullup
PTB4
4
Accesses to
Read/Write
DDRA[7:0]
DDRA[7:0]
DDRA
LED drive
Optional
pullup
PTB3
3
LED drive
Optional
pullup
PTA[7:0]
PTB2
Read
2
Pin
Accesses to PTA
LED drive
Optional
pullup
PTB1
1
PTA[7:0]
PTA[7:0]
Write
Freescale Semiconductor
LED drive
Optional
pullup
PTB0
Bit 0
(3)