DF2166VTE33 Renesas Electronics America, DF2166VTE33 Datasheet - Page 310
![MCU FLASH 3V 512K 33MHZ 144TQFP](/photos/28/61/286114/144-tqfp_sml.jpg)
DF2166VTE33
Manufacturer Part Number
DF2166VTE33
Description
MCU FLASH 3V 512K 33MHZ 144TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Datasheet
1.HS2168EPI61H-U.pdf
(876 pages)
Specifications of DF2166VTE33
Core Processor
H8S/2000
Core Size
16-Bit
Speed
33MHz
Connectivity
I²C, IrDA, LPC, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
106
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
40K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-TQFP, 144-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
- Current page: 310 of 876
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10.4
DACNT, DADRA, and DADRB are 16-bit registers. The data bus linking the bus master and the
on-chip peripheral modules, however, is only 8 bits wide. When the bus master accesses these
registers, it therefore uses an 8-bit temporary register (TEMP).
These registers are written to and read from as follows.
• Write
• Read
These registers should always be accessed 16 bits at a time with a MOV instruction, and the upper
byte should always be accessed before the lower byte. Correct data will not be transferred if only
the upper byte or only the lower byte is accessed. Also note that a bit manipulation instruction
cannot be used to access these registers.
Example 1: Write to DACNT
Example 2: Read DADRA
Rev. 3.00, 03/04, page 268 of 830
MOV.W R0, @DACNT
MOV.W @DADRA, R0
When the upper byte is written to, the upper-byte write data is stored in TEMP. Next, when the
lower byte is written to, the lower-byte write data and TEMP value are combined, and the
combined 16-bit value is written in the register.
When the upper byte is read from, the upper-byte value is transferred to the CPU and the
lower-byte value is transferred to TEMP. Next, when the lower byte is read from, the lower-
byte value in TEMP is transferred to the CPU.
Bus Master Interface
; Write R0 contents to DACNT
; Copy contents of DADRA to R0
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