DF2148BFA20 Renesas Electronics America, DF2148BFA20 Datasheet - Page 552
DF2148BFA20
Manufacturer Part Number
DF2148BFA20
Description
IC H8S MCU FLASH 128K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of DF2148BFA20
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-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
HD64F2148BFA20
HD64F2148BFA20
HD64F2148BFA20
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2148BFA20I
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
DF2148BFA20IV
Manufacturer:
VISHAY
Quantity:
8 001
Company:
Part Number:
DF2148BFA20IV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
DF2148BFA20V
Manufacturer:
Renesas Electronics America
Quantity:
135
Company:
Part Number:
DF2148BFA20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 552 of 847
- Download datasheet (5Mb)
Section 17 Keyboard Buffer Controller
17.4
17.4.1
In a receive operation, both KCLK (clock) and KD (data) are outputs on the keyboard side and
inputs on this LSI chip (system) side. KD receives a start bit, 8 data bits (LSB-first), an odd parity
bit, and a stop bit, in that order. The KD value is valid when KCLK is low. A sample receive
processing flowchart is shown in figure 17.3, and the receive timing in figure 17.4.
Rev. 3.00 Mar 21, 2006 page 496 of 788
REJ09B0300-0300
Operation
Receive Operation
Receive data processing
(receive enabled state)
Receive enabled state
and KDI bits both
Clear KBF flag
Set KBIOE bit
Read KBCRH
Read KBBR
Set KBE bit
KBS = 1?
KBF = 1?
PER = 0?
KCLKI
Start
1?
Figure 17.3 Sample Receive Processing Flowchart
Yes
Yes
Yes
Yes
[1]
[2]
No
[3]
No
No
No
[6]
Keyboard side in data
Execute receive abort
Error handling
transmission state.
[4]
processing.
[5]
[1] Set the KBIOE bit to 1 in
[2] Read KBCRH, and if the
[3] Detect the start bit output
[4] When a stop bit is received,
[5] Perform receive data
[6] Clear the KBF flag to 0 in
The receive operation can be
continued by repeating steps
[3] to [6].
KBCRL.
KCLKI and KDI bits are
both 1, set the KBE bit
(receive enabled state).
on the keyboard side and
receive data in
synchronization with the fall
of KCLK.
the keyboard buffer
controller drives KCLK low
to disable keyboard
transmission (automatic I/O
inhibit).
If the KBIE bit is set to 1 in
KBCRH, an interrupt
request is sent to the CPU
at the same time.
processing.
KBCRL. At the same time,
the system automatically
drives KCLK high, setting
the receive enabled state.
Related parts for DF2148BFA20
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
0.6mm Pitch Board-to-Fine-Coaxial Cable Connectors
Manufacturer:
Hirose Electric
Datasheet:
Part Number:
Description:
0.6mm Pitch Board-to-fine-coaxial Cable Connectors
Manufacturer:
Hirose Electric
Datasheet:
Part Number:
Description:
0.6mm Pitch Board-to-fine-coaxial Cable Connectors
Manufacturer:
Hirose Electric
Datasheet:
Part Number:
Description:
Right angle, Two-piece for fine coaxial cable, Discrete wire connectors; HRS No: 687-0001-5 56; No. of Positions: 20; Connector Type: Board mounting; Contact Gender: Female; Contact Spacing (mm): 0.6; Terminal Pitch (mm): 0.6; PCB Mount Type: SMT; Cu
Manufacturer:
Hirose Electric
Part Number:
Description:
0.6mm Pitch Board-to-fine-coaxial Cable Connectors
Manufacturer:
Hirose Electric
Datasheet:
Part Number:
Description:
0.6mm Pitch Board-to-Fine-Coaxial Cable Connectors
Manufacturer:
HIROSE [Hirose Electric]
Datasheet:
Part Number:
Description:
KIT STARTER FOR M16C/29
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C/2D
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
R0K33062P STARTER KIT
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C/23 E8A
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C/25
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER H8S2456 SHARPE DSPLY
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C38C
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8C35C
Manufacturer:
Renesas Electronics America
Datasheet:
Part Number:
Description:
KIT STARTER FOR R8CL3AC+LCD APPS
Manufacturer:
Renesas Electronics America
Datasheet: