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eZ80F91 데이터시트(PDF) 14 Page - Zilog, Inc.

부품명 eZ80F91
상세설명  Factory-default operating clock frequency at 50 MHz
PDF  30 Pages
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제조업체  ZILOG [Zilog, Inc.]
홈페이지  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

eZ80F91 데이터시트(HTML) 14 Page - Zilog, Inc.

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PS026102-1207
Pin Description
Zdots® SBC for eZ80AcclaimPlus!™ Connectivity ASSP
Product Specification
10
38
TDI/ZDA
Input
JTAG Data Input pin.
39
GND
VSS/Ground (0 V).
40
TRIGOUT
Output
Active High trigger event indicator.
41
TCK/ZCL
PU 10 k
Ω Input
JTAG Input. High on reset enables ZDI mode;
Low on reset enables OCI debug.
42
TMS
PU 10 k
Ω Input
JTAG Test Mode Select Input.
43
RTC_VDD
RTC supply. For proper operation of the Zdots,
this pin must be connected to the same power
source that powers the module (as it is done on
the Zilog® development platform).
44
EZ80CLK
Output
Synchronous CPU clock output.
45
I2CSCL
PU 4 k
Ω
Bidirectional
I2C Bus Clock.
46
GND
VSS/Ground (0 V).
47
I2CSDA
PU 4 k
Ω
Bidirectional
I2C Data Clock.
48
GND
Power
VSS/Ground (0 V).
49
FlashWE
PU 10 k
Ω Input
A Low enables a Write to external Flash memory
boot block area. If this pin is unconnected, the
Flash memory boot block area is Write-protected.
50
GND
VSS/Ground (0 V).
51
CS3
Output
Used on the eZ80190, eZ80L92, eZ80F92,
eZ80F93 devices and connected to the CS8900
EMAC.
52
DIS_IRDA
PU 10 k
Ω Input
A Low disables the onboard IRDA transceiver to
use PC0/PC1 UART pins externally.
53
RESET
PU 2 k
Ω
Bidirectional
Reset Output from module or push-button reset.
54
WAIT
PU 2 k
Ω
Input
Driving the WAIT pin Low forces the CPU to
provide additional clock cycles for an external
peripheral or external memory to complete its
Read or Write operation.
55
VCC
3.3 V supply input pin.
56
GND
VSS/Ground (0 V).
Table 2. Zdots Input/Output Connector Pin Identification* (Continued)
Pin No
Symbol
Pull
Up/Down
Signal
Direction
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