參數(shù)資料
型號(hào): CL-PS7111
廠商: Cirrus Logic, Inc.
英文描述: Low-Power System-on-a-Chip
中文描述: 低功耗系統(tǒng)級(jí)晶片
文件頁數(shù): 12/105頁
文件大?。?/td> 1207K
代理商: CL-PS7111
September 1997
11
PRELIMINARY DATA BOOK v2.0
PIN INFORMATION
CL-PS7111
Low-Power System-on-a-Chip
Keyboard
Buzzer Drive
COL[0–7]
O
Keyboard column drives.
BUZ
O
Buzzer drive output in 18.432-MHz mode.
General-
Purpose I/O
PA[0–7]
I/O
Port A I/O.
PB[0–7]
I/O
Port B I/O (default input).
PD[0–7]
I/O
Port D I/O (higher drive, default output).
PE[0–2]
I/O
Port E I/O (three bits only, default input).
DC-to-DC Drives DRIVE[0–1]
O
DC-to-DC converter drive outputs.
FB[0–1]
I
DC-to-DC feedback inputs.
Test
NTEST[0–1]
I
Test mode select inputs.
Oscillators
MOSCIN/
MOSOUT
I/O
Main 3.6864-MHz oscillator for 18.432-MHz PLL.
RTCIN/
RTCOUT
I/O
Realtime clock 32.768-kHz oscillator.
2.2.1
External Signal Functions
(cont.)
Function
Signal
Name
Type Description
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