DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 65

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

2.4.2
This 24-bit counter indicates the address of the next instruction the CPU will execute. The length
of all CPU instructions is 2 bytes (one word), so the least significant PC bit is ignored. (When an
instruction is fetched, the least significant PC bit is regarded as 0.)
2.4.3
EXR is an 8-bit register that can be manipulated by the LDC, STC, ANDC, ORC, and XORC
instructions. When these instructions except for the STC instruction is executed, all interrupts
including NMI will be masked for three states after execution is completed.
Bit
7
6 to 3
2
1
0
Program Counter (PC)
Extended Register (EXR)
Bit Name Initial Value R/W
T
⎯
I2
I1
I0
0
All 1
1
1
1
SP (ER7)
R/W
⎯
R/W
R/W
R/W
Figure 2.8 Stack
Description
Trace Bit
When this bit is set to 1, a trace exception-handling is
started each time an instruction is executed. When
this bit is cleared to 0, instructions are executed in
sequence.
Reserved
These bits are always read as 1.
These bits designate the interrupt mask level (0 to 7).
For details, refer to section 5, Interrupt Controller.
Rev.2.00 May. 28, 2009 Page 25 of 732
Stack area
Free area
REJ09B0059-0200