C8051F961-A-GM Silicon Labs, C8051F961-A-GM Datasheet - Page 135

• Manufacturer Part Number: C8051F961-A-GM
• Description: 8-bit Microcontrollers - MCU 128KB, DC-DC, LCD AES, QFN40
• Manufacturer: Silicon Labs

Specifications of C8051F961-A-GM

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 8448 B
• On-chip Adc: Yes
• Operating Supply Voltage: 2.5 V to 3.3 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-40
• Mounting Style: SMD/SMT
• Number Of Programmable I/os: 34
• Number Of Timers: 4

10.5. Memory Mode Selection
The external data memory space can be configured in one of four modes, shown in Figure 10.3, based on
the EMIF Mode bits in the EMI0CF register (SFR Definition 10.2). These modes are summarized below.
More information about the different modes can be found in Section “10.6. Timing” on page 137.
EMI0CF[3:2] = 00
On-Chip XRAM
On-Chip XRAM
On-Chip XRAM
On-Chip XRAM
On-Chip XRAM
On-Chip XRAM
E
M
I
F
A[15:0]
D[7:0]
WR
RD
0xFFFF
0x0000
Figure 10.2. Non-multiplexed Configuration Example
EMI0CF[3:2] = 01
(No Bank Select)
On-Chip XRAM
Off-Chip
Memory
Figure 10.3. EMIF Operating Modes
ADDRESS BUS
DATA BUS
0xFFFF
0x0000
(Optional)
Rev. 0.5
EMI0CF[3:2] = 10
On-Chip XRAM
(Bank Select)
Off-Chip
Memory
V
DD
8
0xFFFF
0x0000
EMI0CF[3:2] = 11
A[15:0]
I/O[7:0]
CE
WE
OE
C8051F96x
Off-Chip
Memory
64 K X 8
SRAM
0xFFFF
0x0000
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