HD64F2239TF20I Renesas Electronics America, HD64F2239TF20I Datasheet - Page 161
HD64F2239TF20I
Manufacturer Part Number
HD64F2239TF20I
Description
MCU 3V 384K I-TEMP 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2200r
Datasheet
1.DF2238RFA6V.pdf
(1048 pages)
Specifications of HD64F2239TF20I
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
72
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F2239TF20I
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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The BSET, BCLR, BNOT, BST, and BIST instructions perform their operations in the following
order.
1. Read the data in byte units
2. Perform the bit manipulation operation according to the instruction on the data read
3.
Example: Using the BCLR instruction to clear only bit 4 in the port 1 P1DDR register.
The P1DDR register consists of 8 write-only bits and sets the I/O direction of the port 1 pins.
Reading this register is invalid. When read, the values returned are undefined.
Here we present an example in which P14 is specified to be an input port using the BCLR
instruction. Currently, P17 to P14 are set to be output pins and P13 to P10 are set to be input pins.
At this point, the value of P1DDR is H'F0.
To switch P14 from the Output pin to the input pin function, the value of P1DDR bit 4 must be
changed from 1 to 0 (H'F0 → H'E0). Here we assume that the BCLR instruction is used to clear
P1DDR bit 4.
BCLR
However if a bit manipulation instruction of the type shown above is used on P1DDR, which is a
write-only register, the following problem may occur.
Although the first thing that happens is that data is read from P1DDR in byte units, the value read
at this time is undefined. An undefined value is a value that is either 0 or 1 in the register but reads
out as an arbitrary value whose relationship to the actual value is unknown. Since the P1DDR bits
are all write-only bits, every bit reads out as an undefined value. Although the actual value of
P1DDR at this point is H'F0, assume that bit 3 becomes a 1 here, and the value read out is H'F8.
I/O
P1DDR
I/O
P1DDR
Read value
Write the data back in byte units
#4,@P1DDR
Output
Output
P17
P17
1
1
1
Output
Output
P16
P16
1
1
1
Output
Output
P15
P15
1
1
1
Output
Output
P14
P14
1
1
1
Rev. 6.00 Mar. 18, 2010 Page 99 of 982
Input
Input
P13
P13
0
0
1
Input
Input
P12
P12
0
0
0
REJ09B0054-0600
Input
Input
P11
P11
Section 2 CPU
0
0
0
Input
Input
P10
P10
0
0
0
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