DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 231

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2148BTE20; HD64F2148BTE20

8.3
Port 2 is an 8-bit I/O port. Port 2 pins also function as address bus output function, 8-bit PWM
output pins, and the timer connection output pin. Port 2 functions change according to the
operating mode. Port 2 has an on-chip input pull-up MOS function that can be controlled by
software. Port 2 has the following registers.
8.3.1
P2DDR specifies input or output for the pins of port 2 on a bit-by-bit basis.
Bit
7
6
5
4
3
2
1
0
Port 2 data direction register (P2DDR)
Port 2 data register (P2DR)
Port 2 pull-up MOS control register (P2PCR)
Bit Name
P27DDR
P26DDR
P25DDR
P24DDR
P23DDR
P22DDR
P21DDR
P20DDR
Port 2
Port 2 Data Direction Register (P2DDR)
Initial Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
Description
In Mode 1:
The corresponding port 2 pins are address
outputs, regardless of the P2DDR setting.
Modes 2 and 3 (EXPE = 1):
The corresponding port 2 pins are address
outputs or PWM outputs when P2DDR bits are
set to 1, and input ports when cleared to 0. P27 to
P24 are switched from address outputs to output
ports by setting the IOSE bit to 1.
P27 can be used as an on-chip peripheral module
output pin regardless of the P27DDR setting, but
to ensure normal access to external space, P27
should not be set as an on-chip peripheral
module output pin when port 2 pins are used as
address output pins.
Modes 2 and 3 (EXPE = 0):
The corresponding port 2 pins are output ports or
PWM outputs when P2DDR bits are set to 1, and
input ports when cleared to 0.
P27 can be used as an on-chip peripheral module
output pin regardless of the P27DDR setting.
Rev. 3.00 Mar 21, 2006 page 175 of 788
Section 8 I/O Ports
REJ09B0300-0300