DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 367

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: Lead free / RoHS Compliant
• Eeprom Size: -

10.3
10.3.1
The timer counters (TCNTs), general registers A and B (GRAs and GRBs), and buffer registers A
and B (BRAs and BRBs) 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 10.6 and 10.7 show examples of word access to a timer counter (TCNT). Figures 10.8,
10.9, 10.10, and 10.11 show examples of byte access to TCNTH and TCNTL.
CPU
CPU
On-chip data bus
On-chip data bus
CPU Interface
16-Bit Accessible Registers
H
L
H
L
Figure 10.6 Access to Timer Counter (CPU Writes to TCNT, Word)
Figure 10.7 Access to Timer Counter (CPU Reads TCNT, Word)
Bus interface
Bus interface
Section 10 16-Bit Integrated Timer Unit (ITU)
Rev. 3.00 Mar 21, 2006 page 337 of 814
TCNTH
TCNTH
TCNTL
TCNTL
REJ09B0302-0300
H
L
H
L
Module
data bus
Module
data bus