EM6605 EM Microelectronic, EM6605 Datasheet - Page 4

• Manufacturer Part Number: EM6605
• Description: 4 bit Microcontroller
• Manufacturer: EM Microelectronic

Table 1. Pin Description
Figure 3.Typical Configuration
For Vdd less then 2.0V it is recommended that Vdd is connected directly to Vreg
For Vdd>2.2V then the configuration shown in Fig.3 should be used.
© EM Microelectronic-Marin SA, 02/99, Rev. B/243
4
Pin Number Pin Name
RCin node is hi impedance node and the connection towards Rext to fix the frequency
should be as short as possible. Treat this node as Quartz node.
10*
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
RCout/NC
STB/RST
port C, 0
port C, 1
port C, 2
port C, 3
port D, 0
port D, 1
port D, 2
port D, 3
port A, 0
port A, 1
port A, 2
port A, 3
port B, 0
port B, 1
port B, 2
port B, 3
RCin
reset
Vreg
Vdd
test
Vss
Function
input 0 port A
input 1 port A
input 2 port A
input 3 port A
input / output 0 port B
input / output 1 port B
input / output 2 port B
input / output 3 port B
test input terminal
RC external resistor
RC output frequency
negative power supply terminal
strobe / reset status
input / output 0 port C
input / output 1 port C
input / output 2 port C
input / output 3 port C
input / output 0 port D
input / output 1 port D
input / output 2 port D
input / output 3 port D
reset terminal
internal voltage regulator
positive power supply terminal
Remarks
interrupt request; tvar 1
interrupt request; tvar 2
interrupt request; tvar 3
interrupt request; event counter input
buzzer output
for EM test purpose only
typically 120kOhm - 330kOhm
connect it at Vss - Ground
µC reset state + port B, C, D, write
interrupt request
interrupt request
interrupt request
interrupt request
SWB Serial Clock Output
SWB Serial Data Output
Active high (internal pull-down)
Needs typ. 100nF capacitor tw. Vss
EM6605