UPD70F3714GC-8BS-A Renesas Electronics America, UPD70F3714GC-8BS-A Datasheet - Page 47

• Manufacturer Part Number: UPD70F3714GC-8BS-A
• Description: MCU 32BIT V850ES/LX2 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Ix2r

Specifications of UPD70F3714GC-8BS-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, UART/USART
• Peripherals: LVD, PWM, WDT
• Number Of I /o: 39
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(c) Internal memory size setting register (IMS)
The IMS register is used to set the internal RAM size of the V850ES/IE2.
This register is write-only, in 8-bit units.
Reset sets this register to 00H.
Cautions 1. Write the IMS register before the internal RAM is accessed. This register can be
Remark
After reset: 00H
IMS
When using a partner tool, make the setting in accordance with the contents of Cautions 1 to 3.
Moreover, describe as follows to define the IMS register.
2. Be sure to write 01H to the IMS register.
3. The sample startup routine supplied with the CA850 includes a code that clears the
written only once after reset has been released.
internal RAM area to 0. Therefore, setting the IMS register is required before the
zero-clear routine is executed.
When using the sample startup routine, add instructions <2> to <5> shown in
[Description example] below immediately after the __START label in the startup
routine.
“0x11” of instruction <2> is the set value of the VSWC register and “0x01” of
instruction <4> is the set value of the IMS register.
[Description example]
RAM0
0
1
0
<1>_ _START:
<2>mov
<3>st.b
<4>mov
<5>st.b
<6>mov
#define
Undefined
6 KB (3FFD800H to 3FFEFFFH (RAM size of V850ES/IE2))
W
0
Address: FFFFF9F0H
CHAPTER 3 CPU FUNCTION
User’s Manual U17716EJ2V0UD
IMS
0
0x11,
r13,
0x01,
r12,
#_tp_TEXT, tp
:
:
Specification of internal RAM size
(*((volatile unsigned char *)0xfffff9f0))
0
r13
VSWC
r12
IMS
0
Add
0
0
RAM0
45