p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 52

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 1 Overview
Rev. 1.00 Sep. 21, 2006 Page 14 of 658
REJ09B0310-0100
Type
I
interface
(IIC)
A/D
converter
H-UDI
interface
(H-UDI)
2
C bus
Symbol
SCL0
SCL1
SDA0
SDA1
AN7 to
AN0
ADTRG
AVCC
AVSS
ETRST*
ETMS*
ETDO*
ETDI*
ETCK*
1
1
1
1
1
*
2
SDIP-64
11
43
8
44
29 to 22 21 to 14 26, 25,
1
30
21





QFP-64
3
35
64
36
57
22
13





Pin No.
TQFP-80
3
43
80
44
23 to 18
71
27
17
51
66
70
73
76
I/O
Input/
Output
Input/
Output
Input
Input
Input
Input
Input
Input
Output
Input
Input
Name and Function
I
output type is NMOS open drain
and can drive a bus directly.
I
output type is NMOS open drain
and can drive a bus directly.
Analog input pins
External trigger input pin to start
A/D conversion.
Reference power supply for the A/D
converter. When the A/D converter
is not used, this pin should be
connected to the system power
supply (+3 V).
Ground pin for the A/D converter.
Connect this pin to the system
power supply (0 V).
Interface pins for emulator.
Reset by holding the ETRST pin to
low regardless of the H-UDI
activation. At this time, the ETRST
pin should be held low for 20 clocks
of ETCK. Then, to activate the H-
UDI, the ETRST pin should be set
to high and the pins ETCK, ETMS,
and ETDI should be set
appropriately. When in the normal
operation without activating the H-
UDI, pins ETRST, ETCK, ETMS,
and ETDI are set to high or high-
impedance. As these pins are
pulled up inside the chip, care is
required during standby state.
2
2
C clock input/output pins. SCL0
C data input/output pins. SDA0