D12350F20IV Renesas Electronics America, D12350F20IV Datasheet - Page 707

• Manufacturer Part Number: D12350F20IV
• Description: IC H8S/2350 MCU 4.5/5.5V 0+K I-T
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12350F20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Type: ROMless
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

17.1
The H8S/2350 Group has 2 kbytes of on-chip high-speed static RAM. The RAM is connected to
the CPU by a 16-bit data bus, enabling one-state access by the CPU to both byte data and word
data. This makes it possible to perform fast word data transfer.
The on-chip RAM can be enabled or disabled by means of the RAM enable bit (RAME) in the
system control register (SYSCR).
17.1.1
Figure 17.1 shows a block diagram of the on-chip RAM.
Overview
Block Diagram
Figure 17.1 Block Diagram of RAM
H'FFFBFE
H'FFF400
H'FFF402
H'FFF404
Section 17 RAM
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
H'FFFBFF
H'FFF401
H'FFF403
H'FFF405
Rev. 3.00 Sep 15, 2006 page 671 of 988
REJ09B0330-0300
Section 17 RAM