HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 275

• Manufacturer Part Number: HD64F3026X25
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3026X25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 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: -

8.3
8.3.1
The timer counters (16TCNTs), general registers A and B (GRAs and GRBs) are 16-bit registers,
and are linked to the CPU by an internal 16-bit data bus. These registers can be written or read a
word at a time, or a byte at a time.
Figures 8.4 and 8.5 show examples of word read/write access to a timer counter (16TCNT).
Figures 8.6 to 8.9 show examples of byte read/write access to 16TCNTH and 16TCNTL.
CPU
CPU
On-chip data bus
On-chip data bus
CPU Interface
16-Bit Accessible Registers
H
L
H
L
Figure 8.5 Access to Timer Counter (CPU Reads 16TCNT, Word)
Figure 8.4 16TCNT Access Operation [CPU
Bus interface
Bus interface
16TCNTH
16TCNTH
Rev. 2.00 Sep 20, 2005 page 235 of 800
16TCNT (Word)]
16TCNTL
16TCNTL
Section 8 16-Bit Timer
REJ09B0260-0200
H
L
H
L
Module
data bus
Module
data bus